Kenne Bell Acting Funny

[2001Saleen181]

Some times after I full boost the unit for long duration (going 140mph) and the letting off the gas, the motor would stutter. The engine would act normal after I let it idle for about 1 min. But If I do short burst up to 80 or 90mph everything is fine.

Any Ideas?
A friend said it might be running too rich.
Im going to a dyno next month and will check the air fuel mixture also.

Thanks

 

[Screwed2V]

I wouldn't even think about going full throttle on a blown car without a custom tune.

 

[u_s_marine]

Fuel pump that was the problem with mine - Short burst were fine but the engine was lacking fuel when in upper mph.

 

[Blown00GTAuto]

I wouldn't even think about going full throttle on a blown car without a custom tune.

... yeah, and especially to 140mph ... that's really pushing it .

 

[2001Saleen181]

I thought the Boosta pump and ALREADY tuned KB chip would take care of any fuel issues. And my tach is only at 4500 at 140 so I should not be stressing out the motor or fuel pump.
But, I can see how it could be the fuel starving after Reading US Marine's reply. But If it is starving, I should hear detonation and I surely don't.

 

[2001Saleen181]

Plus the car ran fine at 140 when I did not have the KB on.

 

[Jackie Chan]

did it say "I'm Rick James BITCH! Enjoy Yoself"?

'Cause to me, thats acting funny. Besides, at 140 our cars arent exactly easy to notice things like that

 

[2001Saleen181]

What was that about?

And yes it was very noticeable to my passenger and I.

 

[GinoGT]

Tuned as in a session on a dyno with the a/f and timing curves programmed appropriately, or did you talk to a psychic over the phone on what mods you have?

 

[GT2000JAY]

I would never trust a chip until after I had it on a dyno with a wideband - every car is different and reacts differently to mods - until you know for sure you're safe and your a/f is exactly where it should be trips to 140 can be very hazardous to your car (and your health)....

My .02