nitroracer

iTrader: (5)

my car is not holding boost. i didnt a pressure test and found no leaks. i boost 15 and then it will slowly die down to 5-6. do you guys things i have a bad wastegate?

fstrnyou

nah, just a typical "turbo can't keep up" problem. happens to all of us.

add a list of your mods to give us a better idea of what you're dealing with

nitroracer

iTrader: (5)

here you go

J-Rat

iTrader: (2)

Yep, I am having the same problem.

fstrnyou

ahhh, ported wastegate. that's what's killin ya.

but it's something you need to have. i think the only way to fix that is with an electronic boost controller.

fstrnyou

tell you what tho, you can make a custom intake like i did and you can run 20psi to redline like i did, and then you can blow your motor up like i did. hahaha

nitroracer

iTrader: (5)

i havea friend that has a talon57 trim turbo, frountmount. and all the other goodies.) and i know i can get him if i can hold the boost

nitroracer

iTrader: (5)

i also have additonal injectors. so i got the fuel

Rotory

iTrader: (1)

make sure your fuel pump is getting the right voltage. mine isnt nearly as modded as yours so i dont know if its the same but my boost would fall off i was only getting 10v to the pump. Fixed it and it now holds boost. also do you still have your secondary throttle plates?

Rotory

iTrader: (1)

here is a thread that HAILERS was helping on it might give you some info.

https://www.rx7club.com//showthread....5&pagenumber=1

nitroracer

iTrader: (5)

i dont think that helps me

J-Rat

iTrader: (2)

Doesnt help me either, Ive done the TB mod.

Think I am gonna try the fuel pump re-wire, although I have plenty of fuel..

fstrnyou

i'm telling you, if you have the stock intake, that crap is gonna happen

or, if you have the stock exhaust, that crap is gonna happen

now, if you have both intake and exhaust and you boost falls off at high rpms, and your wastegate is ported, then you need to find another way of controlling your wastegate.

Scott 89t2

time for a bigger turbo

jreynish

iTrader: (2)

Yup the stock turbo is only good to about 12 psi after that you are only creating extra Heat. It is really past the efficiency of the turbo, As Scott suggested if you want to run more power time for a larger turbo!

fstrnyou

you are rigth about the 12psi thing, but mine pulled like a SOB when i was above 15 on the stocker. agreed, there's a **** ton of heat coming from it and the stock IC ain't doin a damn thing anymore, but it's a hell of a lot faster.

i would also agree that the same 15psi would pull a bunch harder with a more efficient turbo and IC. but that's over my budget. one thing i have to realize tho, a FMIC is cheaper than a new motor, which is what i'm going through now because of the 15+psi i was talking about.