I Have A 1988 All Stock Turboii With 160k And Runs Strong,i Had Done The Following:
*s4 Extreme Wastegate Porting
*installed Arcing Beat 3" Downpipe
*3"corksport Cat-back
*exhaust Connected By Way Of 3" Piping
*installed Apexi Intake
*cold Air Box Mod
After Done These ,my Car Does Not Seem To Pull As Hard As I T You Use To,it Now Hits The Boost Cut But Besides The Fuel Cut I Have Not Yet Installed It Seems Slower!can Anyone Advise/it Would Be Greatlty Appreciated!
Thanks,
Jeff

 

you ported the wastgate, did you replace the flap to with the large porting? check for any exhaust leaks

 

of course,the flapper covered 2mm overport and had good seal over port
and how would i go about checking for exhaust leaks/@ the ?i am new to turbo systems i do have 1 bolt that i hvae not re died but would you please explain/ more in detail
thanks

 

maybe its running lean????

 

well one huge problem is you are hitting fuel cut. You will blow your motor, get a FCD or an rtek 7. An exhaust leak wont cause a lack of boost, a vacuum leak however will.

 

You need fuel. At the very least an upgraded fuel pump and an S-AFC. Better would be larger secondaries and the S-AFC to control them, as well as the big fuel pump.

If you are hitting fuel cut, then you need an FCD but fuel upgrades become VERY important with the FCD since the ECU now thinks you are running lower boost then you actually are.

Since you ported the wastegate, you're likely making less boost then you used to. You will need a boost controller (and the proper fuel mods) to raise boost.

 

boost gauge reads correct,when adding fcd i was told that the ecu and fuel system is good up to 10 psi and then further upgrades.your saying thet i must get the larger secondaries such 750cc and supra and or fd fuel pump and what did you mean that i am making less boost if gauge is reading 8.6-9 psi and fuel cut hits, how can that be

 

fuel pump= yes
750's = yes
safc = yes
boost question = dunno..

 

So My Car Is Running Lean Or What?

 

check the AF ratio

 

How Do You Do That?where ,what And How ?please Explain Like I Said I Am New To This Stuff I Am More Old School.thanks Guys For Your Patience And Help!