i just put a new mani on my car. and a new down pipe and i took it for a test drive and when im at full boost my car loses power. so when at full boost the rpm slows down if someone can help me it be great. thanks

 

Sounds like a boost leak, are you reaching full boost? You could have a massive exh. leak cause your turbo not to spool properly...

 

no i got full boost and i just got a new exs. system in. ?????

 

What size is the piping of the exhaust system? If it's too small it could be hurting your performance.

 

the pipping is 2.5
it feels like something eltrical or with the fule

 

You changed the whole exhaust setup. Get it tuned.

 

just asking why does it need to be tuned and should i get a apeix fuel svac .
thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc2legend &raquo;</TD></TR><TR><TD CLASS="quote">You changed the whole exhaust setup. Get it tuned.</TD></TR></TABLE>

word

the diameter of your exhaust can greatly affect your tune...for instance

if you were tuned with a stock exhaust system and a standard t3/t4..lets say a 60 trim. the stock exhaust is causing a restriction, so when you get tuned it will only be creating so much boost in certain points of the powerband.
now...say with the same setup...you threw on a 3 inch, the turbo would be able to spool quicker...because of the free'd up exhaust...causing more boost earlier and in spots of the powerband that were only seeing so much boost with the stock system.

you would not be tuned - you would have a different powerband pretty much.

anytime you do anything "major" (ie. exhaust, downpipe, turbo, intake manifold, etc) to your engine after youve been tuned, you should retune.

goodluck

 

should i get a chip ecu or something

 

go and visit some shops around you...speak with tuners there...see what program they like. then reseach what you want from your ems.

good luck..

check out neptune..uberdata..etc


Modified by yehiknowrite at 12:33 AM 8/10/2005

 

i talk to the shops and they said it was something with my injector

 

anyone ????????????????????

 

Do you have an injector leak?....pull the fuel rail off and make sure the seals at the top of the injectors are still intact and not ripped. You also might wanna check timing?

 

ok thanks