I went to philly dyno works today and got my car dyno tuned...i have 00 gsr motor with t3t04e drag kit with dsm 510cc, vafc 2... with 9lbs of boost i was making 98hp...Does this make sense!?!?!Philly dyno works told me that the main problem is because im using stock exhaust pipings ( which is barely 2 inch pipes), and im using to big of fuel injectors...So my question is...DOes the back pressure make that big of a difference...i mean losing almost 100hp on the stock gsr motor??? HELP is definitly needed here!!!

Link for the first run on the dyno:


http://media.putfile.com/GSR-Turbo

Modified by juniestyle at 11:50 PM 5/17/2006


Modified by juniestyle at 12:30 AM 5/18/2006

 

wow, you got some SERIOUS issues dude, how are you even taking it to a dyno? with that kind of power im surprized the bitch even starts/is drivable, serious issues there bro.

 

some more help would be niice...i know i have a serious problem here so can someone help me to fix it???


Modified by juniestyle at 12:30 AM 5/18/2006

 

Damn Dog that sucks. i really doubt thats a problem those injectors is a perfect size. the exaust im sure made more power than that when it was stock it doesnt make any sence. good luck with that man.

 

that guy is bullshiting you..find a different tuner!, hope you find some help soon...but seriously look for another dyno...even if you have to trailor your car....i had a friend run a drag kit on his da b18a with the shitty fmu, a definite increase in power, even with stock exhaust.

 

change your management and go to a better tuner

ive heard not the greatest things from them. Set up an appointment with evans tuning. Your not to far from him and he will get the job done.

 

wow are you guys serious...Philly dyno works is not legit?!?! DAMN they charged me 236 dollars!!!

 

Link for the first run on the dyno:

http://media.putfile.com/GSR-Turbo

 

some proffesional help is needed!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juniestyle &raquo;</TD></TR><TR><TD CLASS="quote">wow are you guys serious...Philly dyno works is not legit?!?! DAMN they charged me 236 dollars!!! </TD></TR></TABLE>

IM not sayin they arent legit, im just saying that i *heard* from ppl who went there, unhappy results. But from the sound of your car, that sounded weak as **** and you have some serious problems.

any boost creep? or does it hold steady? I sould deff. invest in better engine management

 

whats your A/F? your stock exhaust will not limit you to less then stock power, just think about it man...

I bet your A/F is WAY OFF... you should check your compression after that abuse. and if it's no good then I would get cash for another motor from that shop... especially if they are telling you the exhaust is limiting you to less then stock power lol. did they even use a wideband to tune your car?

 

yeah...i mean philly dyno works were real nice peoples...they knew what they were doing and i learned alot from them...They helped me out alot!!!The thing i want to know is what is wrong with my car!!! Yeah the management is one thing but i have seen people with my setup running 300hp!!! And im only running 98hp!?!??! Less than what the motor itself makes? Thats what is not getting through my head...also the fact they told me is the main problem of me loosing hp is because too much back pressure!!! So they want me to get bigger pipings for my exhaust...atleast 2.5 inches. So if i get a 3 inch pipings will my car be pulling at least 200hp...just from doing that!?!?!

 

i have no idea if they used a wideband? Where does that hook up too? ANd yeah turbosi03...that is what im talking about...there is no way the exhaust could make that big of a difference...THANK YOU!

 

AND yes it was running WAY too RICH...i mean he leaned it all the way he could with the vafc and still running way too rich... could that be the major problem??? I mean im running dsm 510cc injectors...the fuel pressure is at 20-30...the oil pressure was at 25 and at fot it would go up to 90 maybe even 100.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juniestyle &raquo;</TD></TR><TR><TD CLASS="quote">also the fact they told me is the main problem of me loosing hp is because too much back pressure!!! So they want me to get bigger pipings for my exhaust...atleast 2.5 inches. So if i get a 3 inch pipings will my car be pulling at least 200hp...just from doing that!?!?! </TD></TR></TABLE>

Uh, no.

You need better fuel management + new tuner.

Are you using an FMU, bigger injectors, AND the AFC?? What are your settings for the AFC?

BTW, DSM injectors are 450, not 510.

 

yes dsm 510cc injectors, and for my fmu im using...vafc2...the settings were pretty much all leaned out...range from -35 too - 48...all through out the wide and narrow band!!!

 

should i change the injectors too stock since im running too rich or dsm 410cc???

 

An FMU and large injectors? Pick one or the other, man.

My suggestion, get better engine management, ditch the FMU, and have the car tuned by Evans Tuning.

To be honest though, with the combination you already have, there is nothing that tuner could have done without making some hardware changes (ie: ditch the large injectors or the FMU).

 

I don't know much about the vafc2, does it simply control fuel by the fuel pressure? if so then your problem is your not able to control the large injectors. the ECU thinks they are stock and it will control them as if they are stock... thats why you have way too much fuel.

you COULD use stock injectors and just raise the hell out of the fuel pressure under LOW boost for now. but honestly I say do it right and just get an EMS that will control those injecters...

the wideband o2 sensor plugs into your exhaust where your stock o2 sensor is (probalby near the cat). if they didn't crawl under your car to plug anything in then they didn't use a wideband and just blindly made adjustments to your car

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juniestyle &raquo;</TD></TR><TR><TD CLASS="quote">yeah...i mean philly dyno works were real nice peoples...they knew what they were doing and i learned alot from them...they told me is the main problem of me loosing hp is because too much back pressure!!! So they want me to get bigger pipings for my exhaust...</TD></TR></TABLE>

dude, from what you just told me the people at this shop have NO CLUE on what they are doing.. do yourself a favor, cut your losses and don't go back to them.

 

No i dont think they put a wideband?!?! Also i think the vafc controlls the fuel pulses...so u can control when the fuel should dump fuel to the motor...not quite sure though.

How about if i bring down the fuel pressure to 5 - 10 psi with the larger injectors??? Should that work instead of putting stock injectors and raising the fuel pressure???

 

bump for same setup.. FMU and big injectors good luck with your setup.. happy boosting

 

holy ****. that is all.

 

i think he's saying he's using the VAFC instead of the fmu.

when you have the VAFC, you don't use the fmu from my understanding.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juniestyle &raquo;</TD></TR><TR><TD CLASS="quote">I went to philly dyno works today and got my car dyno tuned...i have 00 gsr motor with t3t04e drag kit with dsm 510cc, vafc 2... with 9lbs of boost i was making 98hp...Does this make sense!?!?!Philly dyno works told me that the main problem is because im using stock exhaust pipings ( which is barely 2 inch pipes), and im using to big of fuel injectors...So my question is...DOes the back pressure make that big of a difference...i mean losing almost 100hp on the stock gsr motor??? HELP is definitly needed here!!!</TD></TR></TABLE>

HAHAHAHA!!!!! a bolt on turbo kit made made -30hp. thats awesome.

now on to trying to keep a straight face... i don't want to read the whole thread but, new tuner, fmu or vafc, and what dsm injectors are 510s? a bigger exhaust will really help but you should've still made way more than stock for power. someone fvcked up

 

am i the only one that thinks its the clutch?? did you guys watch the video he posted?? it sounds like when the guy floored it ,,it went straight to redline like the clutch was shot,,,,,so a bad clutch,,plus pig rich,,plus shitty fuel management will make the hp reading come out lower then it should..or maybe the engine is shot also from driving it in those conditions,,do a compression test asap.....

and what kind of tuner doesnt use a wideband o2 sensor to tune??? thats weird..