KA24ET motor breaks up on rev when boost is kicking in. And then car stalls.

[mummbles20]

On my 90 240sx SOHC I can rev all he way to redline at idle. But when i drive the car and i start boosting the engine starts to break up. When i take my foot the gas the car stalls. The AFR go lean so I think i need a way to get more fuel in there. ANY ideas please tell

[WDRacing]

Are you kidding me? What do you mean you need a way to add fuel? If you haven't got this part figured out then you need to abandon the turbo ASAP.

It sounds like you have a intercooler pipe loose or disconnected.

WD

[naspachipi]

I JUST RAN INTO YOUR POST.. DID YOU GET UR ISSUE RESOLVED? I ALSO HAVE A KA24E-T AND I AM ALSO IN SOUTH JERSEY... MY AIM IS [email protected] IF U HAVE QUESTIONS

[nissansweetie91]

you ever think about a boost controler? somthin that will prohibit you to boost under a certain rmp, that an sorry but u ever dyno the thing an to see your air/fuel ratio to make sure your actualy leanin out?

[naspachipi]

where is there a good spot to dyno tune...lets say a ka-t.. i went 2 one (phillydyno works) place in philly (ph on my old motor... and i didnt really like it.. paid $214 and the guy put the car on the dyno for like 40 minutes including strap in and strap off time.... reduced my safc to 30% correction across the board.. and that was it... he said i was dumping too much fuel.... (i have 440cc injectors)...The shop does mostly hondas...even after the tune i still had bogging and stalling out... ran better but not what i expected, wanted to know if any one knew of a nissan.. or a shop that knew how to tune with SAFC ( cuz i honestly dont understand how to use my safc... well at least how to tune it properly) Specifically... in NJ and or even NY

personally my car is idling pretty well... just that it stalls after driving and coming to a complete stop... im gona b working on the timing tomorrow cuz i did hear some detonation .. throw it back 25-30 BTDC which shud take care of that. car felt great with 5lb spring... gona go up to 9lb spring which is what i had in my old motor. wana get dyno tuned @10-12 lbs on this motor... (plan on droppign fully built motor with different turbo setup augstish..)

[lrb_2000]

you mean 15* btdc right?

running without a wideband just doesn't sound very smart to me.

[WDRacing]

SAFC just isn't worth using anymore. Rom tunes are definitly the way to go. $150 just can't be beat...

WD

[naspachipi]

you mean 15* btdc right?

running without a wideband just doesn't sound very smart to me.

if directed towards me... i was running a innovative standalone wideband gauge...w/ data logging

unfortunately car got broken into when it was at the body shop and when they ripped **** out they fried the wideband...arrrr... but definately looking to pick up another one... jus not thinking im going to go the innovative root... it was like $400...lol..

[WDRacing]

Hey man...your sig is to big. Did you see the size of the pic I added to it when I edited TODAY earlier? No bigger then that.

Change it....

I'll edit it again, so you can see the size reference.