Dyno numbers finally!

[Sleepy McNastee]

I went to the dyno this morning and got a baseline. I watched the boost as the mechanic did the runs and all I saw was a hair over 6psi. With that in mind..(Also, it was on a dynojet.)


First pull he brought it up to 5600 and hit 398.9 hp and it hit 390 ft/lbs .It went lean up top and thats why he cut out at 5600.

I was happy but I wanted to hit 400 cause I was telling this guy that used to have an 03 cobra that I bet I would hit 400 with under 7 psi. He was like, I bet you'll make around 365-375.

Next pull the mechanic brought it up to around 5750 and it went lean again. I looked at the screen and it read 404.1 hp and 393.9 ft/lbs. I looked at the ex-cobra owner and he was like "wow, you were right.." I was so happy. But the mechanic told me I needed to upgrade to bigger injectors and ditch my fmu.






Btw: When I showed up there was a guy with an F-250 powerstroke turbo diesel on the dyno. He said he was pushing 30-31 psi !!! On his first run they pulled ~460 hp and an insane 770 ft/lbs!! If my calculations are right thats almost 1000 ft/lbs at the crank!!! I was like, how the hell am I supposed to follow that?

And after my run, a guy with an old 396 Camaro SS strapped in. He only hit 290 hp and 327 ft/lbs. He was a really cool guy and kept complimenting my car, and saying how he couldn't believe how fast the 302 revved up. I told him to strap on a ProCharger and he was like, "well after that I need someting.." er somthing like that

The 396 only got revved to 5500 or so..(the guy wasn't sure on the compression and didn't hook up air/fuel so they went easy) Thats how come the low #'s .

 

[BAFMustangGT]

Awesome numbers dude...

 

[swingline]

Cool. You're over 400.

 

[Sleepy McNastee]

Thanks guys. I didn't think I'd hit 400 after seeing my boost only hitting 6 psi on the way to the dyno. My dad drove so I could get good boost readings and I never saw it hit 7. I really want to get a smaller pulley but I need bigger injectors.


Also, it was 88 degrees inside the shop.

 

[Grn92LX]

He's right, get some 42's and a pro-m 80mm maf and tune it and you'll see 425+ easily even with that low boost. Remember, the better the induction, the "less boost" you'll probably see. It just means your set up is efficient.

WHy did your friend with the 03 only think you'll see 375hp? Is he on crack? good h/c/i + boost = 425+ easily with a safe tune! More or less depending upon pulley size and type of blower. Nice numbers, i'd seriously consider fuel/maf upgrades asap.

 

[Sleepy McNastee]

He's right, get some 42's and a pro-m 80mm maf and tune it and you'll see 425+ easily even with that low boost. Remember, the better the induction, the "less boost" you'll probably see. It just means your set up is efficient.

WHy did your friend with the 03 only think you'll see 375hp? Is he on crack? good h/c/i + boost = 425+ easily with a safe tune! More or less depending upon pulley size and type of blower. Nice numbers, i'd seriously consider fuel/maf upgrades asap.

I think he (the ex-cobra owner) is maybe not up to date about the advancements in the aftermarket as far as the 5.0 is concerned. He is like 60 yrs old ,or so, and he used to have a 5.0 back in the 80's. So I guess thats why. Also , he actually sold that cobra for a hemi ram to pull his boat . But I said "with a cobra" before. I just didn't want to explain then. Cause I was exited.

 

[blown93feature]

Those are some good #'s.I want you to try and understand that 30# injecters are more than enough to run what you have.I would say that you ran lean up top because of your fmu disk not having the right calibration,or your afpr should be bumped up.If you believe those are all good than I would say that your single 255 pump can't keep up with the injector and the they are draining the line.I put 461 to the ground with plenty more to go with an automatic with 30's and I was running so fat that I could have run two cars.I was using a 6:1 disk and had to go to a 4:1 to lean it out.I have twin 255 and that is what you'll need,one intank and one inline.

30# injectors are good for about 80 to 88 horse per cylinder.

 

[Sleepy McNastee]

They got that F-250 up to 150 mph on the rollers. It was the craziest thing I have ever seen. The turbo was nutty .And he had a 4 inch exhaust that spewed the blackest smoke...

 

[Grn92LX]

30's could work with that band aid fmu, but most people why know how to tune, prefer the right injector and no fmu which in his case would be 42's and a pro-m 80mm. I run 30's in my n/a 302 and will probably use them in the 347 i'm planning if they're enough. They will be border line, but should be fine.

 

[Sleepy McNastee]

Those are some good #'s.I want you to try and understand that 30# injecters are more than enough to run what you have.I would say that you ran lean up top because of your fmu disk not having the right calibration,or your afpr should be bumped up.If you believe those are all good than I would say that your single 255 pump can't keep up with the injector and the they are draining the line.I put 461 to the ground with plenty more to go with an automatic with 30's and I was running so fat that I could have run two cars.I was using a 6:1 disk and had to go to a 4:1 to lean it out.I have twin 255 and that is what you'll need,one intank and one inline.

30# injectors are good for about 80 to 88 horse per cylinder.

What kind of fuel pressure are you running? I have an inline pump but I disconnected it cause I couldn't back my fuel pressure off with the regulator. It wouldn't go under 60 psi at idle and broke the seal on my first regulator. So maybe I just need to ditch that afpr(get a better one) and plug in my inline pump.

 

[Sleepy McNastee]

30's could work with that band aid fmu, but most people why know how to tune, prefer the right injector and no fmu which in his case would be 42's and a pro-m 80mm. I run 30's in my n/a 302 and will probably use them in the 347 i'm planning if they're enough. They will be border line, but should be fine.

The mechanic also said 42's are rare these days (discontinued). Is this true? Cause I would rather not have to buy 50's...but I will eventually so

 

[DARK-5.0]

Awesome numbers Joel. Where did you get your car dyno tuned? I'm almost done with my car so we can meet up. I just have to get some parts back from being powdercoated. I'll let you know first hand though.

Jeremy

 

[S/CBlack95GT]

I too run the 30s, a 4:1 FMU, and only 42psi set on the AFPR. My engine runs 11.0:1 and richer over 4500rpms(as intended). You just need to swap the FMU disk and all will be fine. The dyno shop should of had some in stock for use during the runs.

Great numbers though. 400+rwhp is insane on the streets, but oooohhhh so much fun

 

[Sleepy McNastee]

Awesome numbers Joel. Where did you get your car dyno tuned? I'm almost done with my car so we can meet up. I just have to get some parts back from being powdercoated. I'll let you know first hand though.

Jeremy

Thanks man.I went to MC racing . It's where I bought the s/c as well. They didn't really tune it this time, only adjustment was fuel pressure. They did however moniter my air/fuel. Which was good cause I probably would have run into trouble. Yeah let me know.

 

[Sleepy McNastee]

I too run the 30s, a 4:1 FMU, and only 42psi set on the AFPR. My engine runs 11.0:1 and richer over 4500rpms(as intended). You just need to swap the FMU disk and all will be fine. The dyno shop should of had some in stock for use during the runs.

Great numbers though. 400+rwhp is insane on the streets, but oooohhhh so much fun

Yeah, the mechanic said not to use the fmu, so I doubt they had any there.Plus I could tell he didn't want to wait around while I messed with it. Which I understand.

Alright fellers, should I get an fmu disk or bigger injectors, eliminating the fmu? I see good points on both sides. And now I'm not sure.
Anyone know if 42 lb/hr injectors are discontinued?

 

[wytstang]

Good job on the numbers thats awsome. That F-250 powerstroke turbo diesel is crazy. I envy you right now.

 

[Sleepy McNastee]

Good job on the numbers thats awsome. That F-250 powerstroke turbo diesel is crazy. I envy you right now.

Dude, my ears still hurt from the turbo. It was loud. The guy that owns that thing is a nutball. Seriously. He was screaming(joyfully) and shaking his fist all crazy as the dyno numbers popped up. I knew the turbo diesels were kick ass, but I had no idea they could handle that much boost. I bet he scares a lot of people with that thing.

 

[4Jenna]

Nice! Still alot left there
Mine made 457rwhp 438rwtq on 10psi
Turn that boost up a lil!!!

 

[Sleepy McNastee]

Nice! Still alot left there
Mine made 457rwhp 438rwtq on 10psi
Turn that boost up a lil!!!

I probably will but I'm still waiting on wheels/tires that will hook. And my T-5 has 100,000 miles on it.

 

[blown93feature]

you can still buy 42#s and when you go to this size there is a lot more tuning involved due to the amount of fuel being dumped in per cycle.I would say if you run this size injector you will be pulling about 38% of duty cycle out for idle and cold starts.

You will still need to do one of two things no matter what size injector,if you run either size injector the tuning proccess is either analog IE:fmu calibration disk and adjusting your afpr or digital IE: chip at which you don't adj your timing manualy you set it at 10*base and the chip controls the fuel and timing curves.

I don't have a afpr or aftermarket fuel lines or rails.I can tell ya that you ran lean because you disconnected the inline fuel pump and your injector ran dry.I would invest in another fpr and set the idle pressure at 40psi with vacum connected and reconnect the inline and go from there.