Johnny sti

Hi all
Am having serious problems with my car since fitting my new down pipe. I have a 1993 wrx saloon running with a 1995 wrx RA ecu and the check engine light comes on and the car starts to run very badly.
So, i was wondering if it would make a differance if i moved the lambda sensor from the headers to the exhaust, it it would stop this problem?
The only reason i say this is because im not sure where the sensor is on a 1995 car as i have a 95 ECU fitted. Do the 95 cars have the sensor in the exhaust?

Johnny

Pavlo

What other mods do you have? Downpipe alone on a standard car will not do anything except increase overboost a psi or so on spoolup.

Paul

Johnny sti

Thanks for the reply Pavlo

In total my car has

1995 wrx RA ecu
Pipercross induction kit
Magnex twin dump down pipe (the one in question)
Magnex centre decat
Ninja 5 inch back box
optimax on millers ob.
Boost gauge

Thats all i can think of. All the above were on before the down pipe was fitted.

Pavlo

At a guess I am thinking you have boost creep, and your boost is staying high, causing detonation which triggers check engine light followed by safe mode which means much less ignition advance and 8psi of boost.

Sound about right?

Paul

Johnny sti

Im not sure. When i went out in it yesterday, the light came on and as i went onto the fast bit of road i opened it up and still went ok, not great but boost was way over 8 psi. What is turbo creap and why has it shown its ugly face now and not before. What can i do to combat this?
Also found out that the speedo cable had been disconnected. Will this have anything to do with it?

Thanks Pavlo

Bob Rawle

without the speedo connected it is limited by the ecu, reconnect and try again.

bob

Johnny sti

Oh my god. Aman in Swindon with knowledge on scoobies!! You should advertise!!
I will try it now.
Thats the thing. The nearest place in swindon to take an import is is David Hendry and thats a bit of a trip with an engine light on!

Johnny

bluep

You need to connect your speedo cable as said below my cars engine light came on and it cuts out when boosting to protect it.Re-connect cable and disconnect battery for approx twenty minutes to reset ecu, hope this helps mate

Johnny sti

Thanks everyone!!
I no it sounds stupid, but the Doreens dad was fitting an alarm yesterday and was putting wires in behind the dash and i thought that he may have disconnected it which would have been after i pick the new decatted car up!
But what looks like has happened is that they must have caught the speedo cable and pulled it out by accident when removing the old pipe.
So never mind. Thanks everyone. Its a good thing this scooby net aint it!
What a differance the pipe makes!! A bit tinny but will wrap the pipe soon, was told it would get rid of that

Johnny

Pavlo

that would do it!