Problems With Spuddering

[TURBOACCORD]

Ok, I Have A 96 Accord Ex...2.2 Vtec/ 5 Spd. Tsi Turbo Kit Modified. The Upper Rpm Band Is Extremely Strong...however The Low Range Is Horrible. Almost To The Point Of The Car Stalling...personally I Think That The Engine Is Starved For Air...b/c When It Happens The Boost Gauge Is Showing Anwhere From 4 In. Vaccum To 1 Psi Boost. I Have Heard Talks Of Boost Creep, But I Am Not Exactly Sure What That Is Or How To Correct It...any One Have Any Ideas What Would Cause This To Happen And How Can I Fix It. Just For The Record I Have Already Replace The Plugs, Plug Wires, Ignition, Distributor And Coil, O2 Sesnors (both) And The Map Sensor...

[Buzz1167]

You car will miss/spudder if it is "Very" lean, but you would notice that your engine would run hot. So its probably an overly rich condition or just something electrical (but you seem to have checked out most of the electrical), If you dont have an a/f meter, you need to get one or make one; I think its just a good idea to make sure your O2 senosr is working properly if Nothing else, however when on boost It will tell you more accurately b/c you will most likly be running rich witch doesn't make it osccilate as much.

HTH

[quick95civic]

if it is doing that in the transition from vacuum to boost it is probably a lean spike in the fuel curve. Sometimes boosted cars have a problem with the fuel system not being able to supply the proper fuel when it makes that transition to boost. It usually feels like the car falls on its face for just a second right before the turbo builds pressure. Get a good a/f meter and keep an eye on it. Thatll tell you what is going on when the problem occurs.