...help?!

[AlexanderR32]

yo peeps

ive got a little problem with my car in the morning when its cold ?

when i usually drive to work when its cold and the temp is normal on my gauge ,if i take my revs to 5000 my car kinda cuts out, it doesnt stalll it just stops reving out...?kinda scary when its unexpected lol

and another thing hah.. when im driving and its boosting i take my foot off and put it straight back on it kinda jolts..

if u have any thing to say feel free

thanks guys

[JonnoHR31]

stock ecu? how much boost are you running?

most cars will jolt if you go smashing your foot on and off the throttle, wat do you mean exactly?

[Raimi_R]

The rev cut-off may just be the stock ecu in "safe mode" while not at optimum operating temp.

With the jerkiness when coming off throttle, do you have an aftermarket bov? I felt the difference when switching from stock to aftermarket, the stock ones (correct me if I'm wrong someone) have a tiny hole to let air escape coming off throttle.

[snozzle]

my gtr does this sometimes if i come off throttle to about 5% throttle, it jerks as if i took my foot of the throttle and re-applied it again but all ive done is go from about 50% throttle to just touching throttling so i can coast - doesnt happen all the time, mainly when cold, maybe once or twice a day, never did it before it got tuned...... havent really bothered to investigate as im changing the setup soon and will by changing from l jetro pfc to a d jetro pfc

[JonnoHR31]

could be tps playing up and giving you a moment of fuel cut

[3LGODZILA]

sounds like its hitting rich & retard when its cold, turn the boost down a tad