revvin from 3k onwards felt heavy

[gti[GSR]]

im runnin on rb25det, everytime i rev past 3k rev, i felt da car is sluggish, n felt like combustion is stuffed...

any idea? wat plugs i shud use for stock engine stock boost stock setup?

when i take a corner, sometimes da car wud jerk... any opinion?

thanks

 

[ftzone]

seems like you have a weak fuel pump?

 

[BNR]

Sorry, hijack this tread a while... I remembered seeing someone mentioning something like GTRs have a safety features that limits rev to 2500rpm whenever it detected it running too 'lean'.... I'm wondering will it also cut revs to 2500rpm when it detects it running too 'rich'?

 

[alvinT]

well there is a lot of possibility to your problems...
maybe weak fuel pump? low fuel pressure?
spoilt spark plugs ? air filter stuck?

did u try to push it to higher rev and see wat happen?
or it happens from 3k onwards to 6 or 7k?

i never experience of revs cut even running on 'lean' or 'curvy' road...
i guess certainly its not tat problem...

 

[ftzone]

oh ya.. maybe the MAP sensor is faulty. it's like rev-cut

 

[Dr.D]

haiya, jason. when u were using ur rb20, alot less problem n more fun.. now always something wrong

 

[gti[GSR]]

replaced my plugs to denso iridium 24....

dr d, where got la... when bring me go tea????

 

[BNR]

Sorry, hijack this tread a while... I remembered seeing someone mentioning something like GTRs have a safety features that limits rev to 2500rpm whenever it detected it running too 'lean'.... I'm wondering will it also cut revs to 2500rpm when it detects it running too 'rich'?

Cleaned both my Air Flow sensors, now seems to be alright and the sound of the engine and exhaust is even better...