Dyno tune results

GRGT1994 · Apr 16, 2006

Let me know what you think. Mods in sig.

Grn92LX · Apr 16, 2006

I expected a bit more since you had it professionally tuned at AFM with a PMS. Did they give you any suggestions? The timing and fuel curves look good. Your timing curve is similar to mine.

It is a blower cam but I thought it'd make more. Did you open up the small BBK collector? It necks down to near 2.25".

Since you have 4.10 gears, swapping to a track heat manifold would help up top.

zenboy99 · Apr 16, 2006

The cats are probably holding you back a little on the top end. That A/F ratio is nice and flat though.

S/CBlack95GT · Apr 16, 2006

Nice numbers. I believe I guessed 285

WhiteDevil · Apr 16, 2006

So what were the numbers before the tune? Did it help alot?

mo_dingo · Apr 17, 2006

Maybe nix the cats and add a higher duration cam, and you should break the 300 mark. But still, it looks good for the combo and should do well at the track.

Nice to see it put down that kind of power huh?

GRGT1994 · Apr 17, 2006

It feels great, SOTP improvement is noticable. We didn't capture a baseline before the PMS, so no measured comparison. But looking at what I pulled on a few runs with my Gtech, I went from a best 0 to 60 before of about 5.1 seconds down to 4.8. And the 5.1 before was kindof a freek run (maybe I caught the wind or was on a downhill?). My typical strong run to 60 before was about 5.5.

I didn't think high flow cats would make much difference. But the curve does look pretty flat at the top. That might be desirable in a street car, but it also might confirm what you guys suggested above (delete the cats and switch to a track heat upper).

I don't really want the volume of a cat-less mid pipe. Any way to lose the cats but quiet it down (other than turbos )? Any other suggestions to put the peak on my power curve?

IEatRiceGT · Apr 17, 2006

how much did the tune cost you?

Joes95GT · Apr 17, 2006

I'd be willing to guess that 1.7 rockers would make a decent bit of difference with that camshaft...

Joe

SWYZ721 · Apr 17, 2006

A little hit off of the hose would make a nice peak

final5-0 · Apr 17, 2006

GRGT1994 said:
It feels great, SOTP improvement is noticable. We didn't capture a baseline before the PMS, so no measured comparison. But looking at what I pulled on a few runs with my Gtech, I went from a best 0 to 60 before of about 5.1 seconds down to 4.8. And the 5.1 before was kindof a freek run (maybe I caught the wind or was on a downhill?). My typical strong run to 60 before was about 5.5.

I didn't think high flow cats would make much difference. But the curve does look pretty flat at the top. That might be desirable in a street car, but it also might confirm what you guys suggested above (delete the cats and switch to a track heat upper).

I don't really want the volume of a cat-less mid pipe. Any way to lose the cats but quiet it down (other than turbos )? Any other suggestions to put the peak on my power curve?

On the big end, I'd be willing to bet moving to the track heat upper will give you more gain than going to an off road pipe.

My guess would be the cats would sap between 5 to 10 rwhp and I think you would be closer to 5 than 10. I've seen some say for a na stock block combo, the loss from high flow cats could be as little as 3rwhp

Did you try a bit fatter ratio

I picked up power moving from 13.0 to 12.5

How much total spark advance

At what rpm is it all in at

Grn92LX · Apr 17, 2006

Grady, if you look at the graph you'll see it says "+10 +10 +8 +8". Thats the timing curve added in to the PMS. Assumming he has stand alone ON (it only comes on at 4000 rpm in pre 04 PMS's) that means his WOT timing is 35* total from 4000 and up until it hits 6000, its 33* total. In standalone the PMS sets the total timing to 25* + what you add in.

His curve in the PMS would be 2200 +10, 4000 +10, 6000 +8, 7800 +8

GRGT1994 · Apr 17, 2006

Grn92LX said:
Grady, if you look at the graph you'll see it says "+10 +10 +8 +8". Thats the timing curve added in to the PMS. Assumming he has stand alone ON (it only comes on at 4000 rpm in pre 04 PMS's) that means his WOT timing is 35* total from 4000 and up until it hits 6000, its 33* total. In standalone the PMS sets the total timing to 25* + what you add in.

His curve in the PMS would be 2200 +10, 4000 +10, 6000 +8, 7800 +8

Thx for the clarification. That is all way over my head. Part of the reason I went to AFM to have someone else tune. Looks like I need to start doing some read'n and learn'n on all this stuff.

Hey, can I just pick up the Track Heat upper for my current lower, or do I need the whole $400+ set?

Grn92LX · Apr 17, 2006

The upper is a direct replacement for your street heat upper. You only need to buy the upper.

bimmertech · Apr 17, 2006

just curious if the a/f was read by a wideband?

GRGT1994 · Apr 18, 2006

bimmertech said:
just curious if the a/f was read by a wideband?

yes

Question: What might the trade off be (if any) by changing to a Track Heat upper?

GRGT1994 · Apr 24, 2006

Black95GTS · Apr 24, 2006

GRGT1994 said:
yes

Question: What might the trade off be (if any) by changing to a Track Heat upper?

Your power band will shift up. The car will want to rev a little higher, but with a 4.10 screw that won't be an issue. Notice how your HP starts to die around 5500? Now it will start to die around 6500. Torque loss will be negligible compared to gains in HP.

It's a good middle of the road intake.... shorter runners for the track but not tooo short where you limit rpms.

Depending on how high you spin the motor, make sure your valve springs are up to snuff. Not sure about the TW stuff.

Adam

95vert354 · Apr 29, 2006

Black95GTS said:
Your power band will shift up. The car will want to rev a little higher, but with a 4.10 screw that won't be an issue.

Adam

Grn92LX said:
Since you have 4.10 gears, swapping to a track heat manifold would help up top.

Saw something here and had a question. I see both of you mention he has a 4:10 gear ,but the dyno sheet shows a 3:73. Wouldn't this make a difference on the actual HP/TQ numbers? I dont have any experience with dyno's but I'm getting ready to put mine on one for a tune, and common sense tells me it would give an incorrect reading

Zero Signal · Apr 29, 2006

If he had 4.10s and they entered in 3.73s, his dyno would be uniformly high by 10% which I doubt is the case.

Dyno tune results

New Member

Attachments

Fidanza Man!

New Member

New Member

New Member

New Member

New Member

Member

Mustang Master

Fidanza Man!

New Member

Fidanza Man!

New Member

New Member

New Member

Active Member

New Member

Active Member

Similar threads

Privacy & Transparency

Privacy & Transparency