im using wira 4g15 manual trans with weber dcnf 40 carb + knn air filter, powerzone cam, and powerzone 421 extractor
i need advise for the right/optimum piping size
rite now im using 2' piping, original route + 2' straight flow muffler
very hard to achieve top speed
rpm at about 5k something goes wrong
the car wont increase speed
feel like choked
have to release pedal little bit then press again then ok sikit
but then
its sucks
any opinion to increase the...
Ask a question, start a discussion or post something for sale!
