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Progress Thread Progress Thread- From6to8's 1994 Cobra Supercharger install

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Noobz347

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#21
  • Sep 25, 2025
  • #21
from6to8 said:
Ok. I just have to decide if I want to run the stock pullies or not he heheee. Communicating with a guy on fb messenger who's setup is similiar and he made 416/423 and he said those tuners didn't know what they were doing lol. He ended up getting a mail tune from Ted Jenkins and said his car runs and does waaay better; he didn't get it dynoed again though. Just asked him if he's running stock pullies and I'll see what he says. Those numbers aren't bad and I'm sure I'll be satisfied.

Ted Jenkins is the man on fb he does remote tuning as well......
Click to expand...

Personally, I would not wring my fingers about this too much.

Get it all together
Run the stock pulleys
Get it tuned and squared away

Once you've recovered a minute and have had time to put a few miles on the new combo, [then] worry about pulleys. Adding a few lbs of boost doesn't mean you need a new tune. The tune by then will have already been shown the way. More air mass doesn't break it.
 
Reactions: 85GT4V and from6to8

from6to8

There's suction so I used that end O_O
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#22
  • Sep 25, 2025
  • #22
Noobz347 said:
Personally, I would not wring my fingers about this too much.

Get it all together
Run the stock pulleys
Get it tuned and squared away

Once you've recovered a minute and have had time to put a few miles on the new combo, [then] worry about pulleys. Adding a few lbs of boost doesn't mean you need a new tune. The tune by then will have already been shown the way. More air mass doesn't break it.
Click to expand...
Exactly what I was thinking........
 

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,162
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San Diego, CA
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#23
  • Sep 25, 2025
  • #23
Noobz347 said:
Personally, I would not wring my fingers about this too much.

Get it all together
Run the stock pulleys
Get it tuned and squared away

Once you've recovered a minute and have had time to put a few miles on the new combo, [then] worry about pulleys. Adding a few lbs of boost doesn't mean you need a new tune. The tune by then will have already been shown the way. More air mass doesn't break it.
Click to expand...
for @from6to8 this is the advice i'm going with on mine. I don't plan on running the 'low boost' kit forever. But i want to get it all up and running (it is - its down right now for other things) drive it for a while in this combo then proceed with going deeper down the path. I already have TFS heads sitting on my garage shelf waiting to go on, but i will probably wait longer and just do a complete engine rebuild and other mods all at once later on. CA SMOG really throws a wrench into what i can and cannot do though.

Also, just be aware that replacing the pulley on the Vortech may void its warranty, if your concerned about that.
 
Reactions: 85GT4V and from6to8

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
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#24
  • Sep 25, 2025
  • #24
Noobz347 said:
Personally, I would not wring my fingers about this too much.

Get it all together
Run the stock pulleys
Get it tuned and squared away

Once you've recovered a minute and have had time to put a few miles on the new combo, [then] worry about pulleys. Adding a few lbs of boost doesn't mean you need a new tune. The tune by then will have already been shown the way. More air mass doesn't break it.
Click to expand...
If you don't mind, take a look at all the things I put a ? by and let me know your thoughts. I think I'll be fine with the billet adj regulator though when Scott and I talked last week he mentioned he liked aeromotive because of something with boost and regular fb regulators that he likes the aero better. I think I have a handle on everything else and feel that the modded list I have vs what Scott wanted to use if I let him put together, I feel I'll be fine with that....
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,024
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Box behind Walmart
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#25
  • Sep 25, 2025
  • #25
You will have more than enough fuel flow regardless of which parts you go with.

Speaking of which.... Something @AeroCoupe mentioned:

View: https://www.youtube.com/watch?v=Ium8jf4Jm04&list=PLmH4cY5RfBUWaLcmgN_voW67Y1Vzz1t0U&index=2
 
Reactions: from6to8 and AeroCoupe

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
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Sep 25, 2025
#26
  • Sep 25, 2025
  • #26
gkomo said:
for @from6to8 this is the advice i'm going with on mine. I don't plan on running the 'low boost' kit forever. But i want to get it all up and running (it is - its down right now for other things) drive it for a while in this combo then proceed with going deeper down the path. I already have TFS heads sitting on my garage shelf waiting to go on, but i will probably wait longer and just do a complete engine rebuild and other mods all at once later on. CA SMOG really throws a wrench into what i can and cannot do though.

Also, just be aware that replacing the pulley on the Vortech may void its warranty, if your concerned about that.
Click to expand...
yeah that's what I'll do. ONly really one other question from my list about the fpr and if my billet adj will be fine I'll just run it and not worry about the aeromotive. Other than that I'll finalize the list and start getting best pricing and start ordering...
 

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
1,896
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Sep 25, 2025
#27
  • Sep 25, 2025
  • #27
Noobz347 said:
You will have more than enough fuel flow regardless of which parts you go with.

Speaking of which.... Something @AeroCoupe mentioned:

View: https://www.youtube.com/watch?v=Ium8jf4Jm04&list=PLmH4cY5RfBUWaLcmgN_voW67Y1Vzz1t0U&index=2
Click to expand...
video unavailable lol
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,024
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234
Box behind Walmart
Sep 25, 2025
#28
  • Sep 25, 2025
  • #28
from6to8 said:
Ignitiion box ( might be either Mallory hyfire 6 or Pertronix digi HP instead of MSD)
Click to expand...
Meh... I don't like these things so, I'll leave recommendations to others.
from6to8 said:
Pro M 92 mm MAF ( seems I'll need to get it calibrated through them at purchase, or??)
Click to expand...
This does [not] need to be calibrated for any injectors. You are getting a tune so this is not requred. Furthermore, a "calibrated" meter (this is a misnomer BTW) would never allow you to run 60s with an A9X. The size you have selected is fine. It should come with a transfer function printed on a sheet. Give that sheet to the tuner.
from6to8 said:
UPR 4 inch power pipe
Click to expand...
Cool
from6to8 said:
Scott suggested a 3.47 pulley ( ?)
Click to expand...
We covered this.
from6to8 said:
255 fp ( Scott suggested 340 with upgrade wiring but said 255 should work but suggest to upgrade wiring. My research shows there's a lot of folks running the oem wiring and have been fine for a long time)
Click to expand...
We covered this.
from6to8 said:
Scott suggested an aeromotive fp regulator ( I already have a billet adj. on it and I see some guys run it, should be fine?)
Click to expand...
I run an OEM style FPR. Under what conditions would you need to adjust fuel pressure? Anyone?
from6to8 said:
Can I run an ignition box or does it make sense to run one with the oem coil?
Click to expand...
I have a regulator that keeps my coil saturated. I can adjust voltage directly to the coil. The ignition systems on these cars is pretty stout. More stout than aftermarket systems IMO. We got a very hot/fat spark out of our ignition systems and relatively cheap spark plugs. I don't see the point in aftermarket ignition systems in our cars if you're not using a boost-retard.
from6to8 said:
It seems 30-40 more hp with the 4 inch power pipe vs what comes in the kit?
Click to expand...
I think that is a [very] optimistic but there will be an improvement. Centri blowers are not as 'inlet restriction free' sensitive as positive displacement blowers are.
from6to8 said:
Pcv setup with breather on the oil fill. The line that is now from the CAI nipple to the VC nipple will go where with the SC?
Click to expand...
Post an image of what you have.

Just picture in your mind, the flow of air at idle and cruise. Crank case air is already metered so, it [should] return to vacuum to the inlet [after] the mass air meter.

However... venting crank case air to atmosphere is not the end of the world and works just fine. We already discussed using one that has a check-valve.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,024
21,205
234
Box behind Walmart
Sep 25, 2025
#29
  • Sep 25, 2025
  • #29
from6to8 said:
video unavailable lol
Click to expand...

Click on the link beneath it. Seems it is available and YT is having issues.
 

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
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#30
  • Sep 25, 2025
  • #30
Noobz347 said:
Correct. Boost pressure is a side effect. The better your engine processes air, the less boost you get.

Even so, the HP on the better breathing engine will be higher than the lower breathing engine even though the P,S, and I's read higher.

It's that pesky pressure vs. volume thing that I refer to all the time. We had a similar conversation about fuel pumps.
Click to expand...
so at less than 6 psi will I be ok running a setup like gkomo with the check valves in 2 locations and not worry about using a breather at all or even catch can?
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,024
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Box behind Walmart
Sep 25, 2025
#31
  • Sep 25, 2025
  • #31
from6to8 said:
so at less than 6 psi will I be ok running a setup like gkomo with the check valves in 2 locations and not worry about using a breather at all or even catch can?
Click to expand...

Without seeing/knowing the entirety of what you all talked about.... I can't even image what this looks like.
 

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
1,896
142
94
Sep 25, 2025
#32
  • Sep 25, 2025
  • #32
Noobz347 said:
Meh... I don't like these things so, I'll leave recommendations to others.

This does [not] need to be calibrated for any injectors. You are getting a tune so this is not requred. Furthermore, a "calibrated" meter (this is a misnomer BTW) would never allow you to run 60s with an A9X. The size you have selected is fine. It should come with a transfer function printed on a sheet. Give that sheet to the tuner.

Cool

We covered this.

We covered this.

I run an OEM style FPR. Under what conditions would you need to adjust fuel pressure? Anyone?

I have a regulator that keeps my coil saturated. I can adjust voltage directly to the coil. The ignition systems on these cars is pretty stout. More stout than aftermarket systems IMO. We got a very hot/fat spark out of our ignition systems and relatively cheap spark plugs. I don't see the point in aftermarket ignition systems in our cars if you're not using a boost-retard.

I think that is a [very] optimistic but there will be an improvement. Centri blowers are not as 'inlet restriction free' sensitive as positive displacement blowers are.

Post an image of what you have.

Just picture in your mind, the flow of air at idle and cruise. Crank case air is already metered so, it [should] return to vacuum to the inlet [after] the mass air meter.

However... venting crank case air to atmosphere is not the end of the world and works just fine. We already discussed using one that has a check-valve.
Click to expand...
I will get an image later when I get home and upload.

Yeah your comment on the pulley setup a few minutes ago probably came after I sent that post about replying to all lol.

And yeah I'll run it and see how it does without worrying about the ignition box
 

from6to8

There's suction so I used that end O_O
15 Year Member
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#33
  • Sep 25, 2025
  • #33
Noobz347 said:
Without seeing/knowing the entirety of what you all talked about.... I can't even image what this looks like.
Click to expand...
you'd have to go look at his post on the first page lol
 

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,162
1,410
133
San Diego, CA
Sep 25, 2025
#34
  • Sep 25, 2025
  • #34
from6to8 said:
so at less than 6 psi will I be ok running a setup like gkomo with the check valves in 2 locations and not worry about using a breather at all or even catch can?
Click to expand...

Noobz347 said:
Without seeing/knowing the entirety of what you all talked about.... I can't even image what this looks like.
Click to expand...
I'm no guru so hopefully i'm explaining this correctly, but the way my valve cover part of the PCV system is almost 'like' a breather with a check valve. Instead of running the hose from the VC to TB (after MAF), it runs from VC to 'before' the MAF, into the airbox, but with a check valve. So its basically venting to atmosphere but just right into the air filter and the check valve makes sure no unmetered air gets into the crankcase.

The other check valve is added in between the factory PCV and upper intake.

I'm not sure who @Noobz347 was referring to with not being able to picture this set up, but thats how mine is.
 

from6to8

There's suction so I used that end O_O
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#35
  • Sep 25, 2025
  • #35
gkomo said:
I'm no guru so hopefully i'm explaining this correctly, but the way my valve cover part of the PCV system is almost 'like' a breather with a check valve. Instead of running the hose from the VC to TB (after MAF), it runs from VC to 'before' the MAF, into the airbox, but with a check valve. So its basically venting to atmosphere but just right into the air filter and the check valve makes sure no unmetered air gets into the crankcase.

The other check valve is added in between the factory PCV and upper intake.

I'm not sure who @Noobz347 was referring to with not being able to picture this set up, but thats how mine is.
Click to expand...
yeah it was you who I mentioned and said he'd need to go look at what you said to maybe understand. Btw mine right now is like that with the nipple of the VC going to the nipple of the CAI which is before the meter I'm sure but I'll double check. So bascially if I can do that same thing I might be fine but if I need to run check valves and that'll make things better I'll run 1 or 2 as well......

I will be running a power pipe though so not sure it'll be before the MAF
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
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#36
  • Sep 25, 2025
  • #36
Gasses that you are recovering from the crank case is already metered.

So, you should return it [after] the MAF and not before.
 
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gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,162
1,410
133
San Diego, CA
Sep 25, 2025
#37
  • Sep 25, 2025
  • #37
I can only speak to my setup, but i installed it per Paxtons instructions. I'll have another gander just to make sure i'm actually correct, but i believe I am in how i'm explaining my setup.

Edit: i am correct in how i was explaining it. The brass barb with the hose and metal check valve is where the line from the VC goes to (before MAF) into the airbox:



Progress Thread Post in thread 'Komo's 1990 GT - Parts Gathering Purgatory & Home Remodel'

May 9, 2025
Supercharger install is done!

Got the fuel feed hardline out of the little bracket and that was it, elbow was so easy to get on with that out of the way. One thing I had to do is route the A/C hose in between the inlet and discharge piping. It has wiggle room so not pinching anything and it’s not bent all weirdly:





Then put the line from the oil fill tube to airbox:



From there it was just putting the discharge tube on:





Which basically wraps up the install.

I found the right hex head bit to put the breather on the...
  • gkomo
 
Last edited: Sep 25, 2025
Reactions: Noobz347

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
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Sep 25, 2025
#38
  • Sep 25, 2025
  • #38
Noobz347 said:
Gasses that you are recovering from the crank case is already metered.

So, you should return it [after] the MAF and not before.
Click to expand...
I guess you made that comment for him?

As for mine mine is currently the valve cover goes to the CAI and that is after the meter.

Running the power pipe it appears that it will also be after the meter I will just have to run a long hose that will connect to the power pipe, run it through the fender well where the pipe will be.

 

from6to8

There's suction so I used that end O_O
15 Year Member
Sep 2, 2012
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Sep 25, 2025
#39
  • Sep 25, 2025
  • #39
 
Reactions: Noobz347

from6to8

There's suction so I used that end O_O
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#40
  • Sep 25, 2025
  • #40
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