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Hey Guys n Gals :D

I currently have a R32 GTST with

Rb20det

Standard Plum Back Bov

Standard Boost (spikes at 10psi)

Standard Side Mount Intercooler

Standard Fuel System etc

HKS spark plugs (came with car from dealer so havent changed em yet)

3"inch Bee R catback exhaust & MetalCat Hiflo Catalytic Convertor

Standard Dump and Engine Pipe

I've had the car 6mnths and as of 2 weeks ago it has been popping, backfiring alot and is starting to lack power. The car always pops and splutters after you take your foot off the accelerator, during gear changes etc and I am absolutely blank to what the problem is???

The car never misses when accelerating, it doesnt blow any smoke from the exhaust under WOT at all.

Im only a 2nd yr apprentice mechanic and dont have much knowledge in how to diagnose problems like this....

Any information or help about how to diagnose what problem the car has would be greatly appreciated as its not a great hp car or anything its just my pride and joy... I just dont wanna do any damage to it!

Many Thanks

Pete (BOOSTA)

Sth Brissy (QLD SAU)

Edited by BOOSTA
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https://www.sau.com.au/forums/topic/143698-r32-gtst-running-rough/
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soapy water isnt real good unless you pressurize your manifold. Easiest way is by spraying aerostart or similar aroung inlet manifold while engine is idling, if revs increase the leak is in the area where you were spraying. I have access to a manifold leak detector, awesome machine, it pressurizes manifold with smoke, makes leaks very easy to find, but failing that, the aerostart or "startyabastard" will work

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