Just dynoed my car today

[Chevy2g3]

And I made 261.1 hp uncorrected at 17psi. Here's my mod list:
Turbonetics t3/to4e
Dejon air intake
3 inch turbo back exhaust
Key diver chip compensating for 650cc injectors
Walbro 255 fuel pump
Punishment fmic
Greddy type rz bov

My afr would dip to 9.9 then balance off at 11.4. The shop said I had room to raise the boost to 22 psi but I was out of dyno pulls by then. So what do you think? Is that a good hp number for the amount of boost I'm running?

 

[Bud92gsx]

So fuel, turbo, tune and exhaust on 17psi and you made 261..Not bad sir..Get it back on the dyno at 22 psi..But add arp headstuds so the head doesn't lift..

 

[Chevy2g3]

Oh my bad. I was still excited about dynoing that I forgot the internal engine mods:
I have ARP headstuds with mls gasket. Also my bottom end has been refreshed and the crank has been balanced and polished.

 

[TSiAWD666]

It's about right I would guess without knowing really specs of your turbo. On a 16g I dyno'd at 262whp at 18psi.

On pump with similar mods on a 50-trim I dyno'd at 322whp at 21 psi. Not the best I'm sure but that's all I got out of that setup on 93 octane.

 

[Chevy2g3]

My turbo is a 57 trim and I ran it on 91 octane. Also I'm up in Colorado and I heard that can make a huge difference in hp numbers.

 

[Bud92gsx]

It's like 1 psi for every thousand feet above sea level isn't it?

Or does the compressor just smash the air together to make it more dense anyway..

 

[Chevy2g3]

I'm not really sure. Ive just been told that your hp numbers will be lower here.

 

[Bud92gsx]

I ran 17psi at 7200 feet with no fuel cut on a stock car with a 16g...

When I came back home..I had to back off to 14 psi or below..

 

[Chevy2g3]

I'll probably dyno again next month when I get 272 cams and gears. Hopefully at 22 psi I'll be over 300 hp.

I ran 17psi at 7200 feet with no fuel cut on a stock car with a 16g...

When I came back home..I had to back off to 14 psi or below..

So I have to run more boost because I'm above seal level to make power equal to someone at sea level with the exact same mods? I.e 22 psi above sea level for 17 psi power at sea level?

 

[Bud92gsx]

That's the way I was tought...But I could have been tought wrong...But on 17psi out there I did not hit fuel cut..Back home I did hit fuel cut on 17 psi..

Cams should definatly help you get close or over 300..Your limiting factors wil be lack of fuel..

 

[Chevy2g3]

I think cams will help as well.

 

[Bud92gsx]

I know of a guy with cams and a 20g untuned..He put down like 286 or something..

 

[91stocker]

I know of a guy with cams and a 20g untuned..He put down like 286 or something..

Altitude is a bi*** though. Found that out when i was living in Wyoming haha.

 

[Bud92gsx]

Altitude is a bi*** though. Found that out when i was living in Wyoming haha.

I was there too man...

 

[Chevy2g3]

Altitude is a bi*** though. Found that out when i was living in Wyoming haha.

Yeah it is.