why does my car drop off

[viper92086]

i can't figure out why my car would drop off after 5k i wasn't throwing any codes when i was on this dyno, any ideas? i'm pretty sure its not supposed to look like that. btw i was running 93 octane and was at 9psi (shimmed wastegate), when i boost the car the boost holds till redline or so the guage says

 

[IJ.]

Stock CT running out of breath?

 

[viper92086]

lol, but the question is why? or is it just me and my car is fine? my friend brought it to my attention and i really can't figure it out now

 

[bowsercake]

looks fairly normal to me. Stock engine and turbo?

 

[viper92086]

na-t with gte electronics

 

[viper92086]

i should correct myself na-t with 3in elbow and full exhuast, as well as 2.5" hardpipes, stock ic

 

[Sawbladz]

normal...based on personal experience.

EDIT: stock turbo

 

[TurboStreetCar]

i think its the different scales playing tricks on you, screwed me up a little until i realized the scaling is different for hp and tq, i wonder why they do that.....

 

[viper92086]

hmm ok thanks i think it is the tq curve throwing me off

 

[viper92086]

btw what psi are u at sawbladz

 

[QWIKSTRIKE]

You are doing fine with that setup.....Etown will be a blast for you. Close to 250 to the wheels with minimum mods is great dude.

 

[viper92086]

^ lol so whens the next meet

 

[billspreston01]

mine did the same thing on the stock ct. at 5k rpm boost dropped a couple psi

 

[Wills7MGTE]

I use a MBC and have not had that problem think your shimming may have anything to do with it, I doubt it but figured I'd bring it up so someone with more knowledge could give me a good smack. Although I am on a 7MGTE with 10psi, hardpipes, a bigger FMIC and full 3 inch turbo back exhaust and some other misc mods (fans, bov, etc)

 

[Sawbladz]

btw what psi are u at sawbladz

That dyno was at ~10-11 psi. Stock turbo, stock IC and piping, stock fuel. All I had was a DDP, 3" exhaust and an intake. I did a compression test a month or so after that dyno and it revealed low compression. I hope to have a bit more after a fresh rebuild.