boost problem

[gtcman]

I have a TII Lebaron and when I floor it it spools up but once I reach 15 lbs it knocks back down to 12 and it feels like there is a loss of power, but if I let off the gas just a little the boost goes up to 14 and will stay there. I can also feel the power returning when I don't have it to the floor. Anyone know why it would does this? I searched the forum but didn't find anything, thanks in advance

[86shelby15psi]

i belive it's fuel cut i think?

[daytonajesse]

By loss of power do you mean it's like the car shuts off for a second? Or it's just making a little less power?

If it shuts off for a second that would be normal for a stockish setup at the particular boost. At 14.3-14.7 psi a stock computer will cut the fuel and spark until the rpm's and boost come down.

If it just looses a lil power, thats normal too. When you have it completely floored your car goes open loop, and richens up the mixture to be safe. If you have a stock computer I wouldnt recommend boosting to 14psi at part-throttle, a dangerously lean area to be. It feels faster because it is lean.

[Orangetona]

Have you installed the zener diode? If not, you will overboost. It occurs at 14.7 psi.

[tryingbe]

Sounds normal for a stock everything TII car.