does anyone know if a faulty knock sensor could somehow retard ignition? Also does anyone have any good spec's on gapping plugs...

 

What ECU are you using?

The stock ECU does retart timing some using the knock reading. The PFC does not.

 

I am using the M2 stage 3...99 twins new, new pineapple motor, etc...

 

the stock ECU will go into limp home mode if the knock sensor is throwing errors. though it would effect boost too much

 

Would limp mode effect my ignition in any way as to not produce spark on boost acceleration?

 

Yes, limp mode will limit your performance. Are you getting any codes (some codes don't always trigger the CEL)?

 

i'm not totally sure what limp home mode puts restrictions on, can only assume it retards ignition and richens fuel mixtures. it will run fine and have boost, just not at optimium performance

have you checked the ECU for errors?
you'll have to tell us more detail what is actually wrong with your FD. by the sounds of it you engine splutters when it hits boost. this can happen if the MAP sensor is disconnected

 

My boost is like 12-11-14, the spike is ok because i know i can fix that by porting the wastegate. But when the car boosts it does not accelerate, the boost slams up to 12 lbs, but the car just does not move. My mods are as listed: new Pineapple Stage 3 motor with all new and cryo-treated components, oil mods and loop line, only about 1800 miles on motor. Brand new 99 efini turbo's, fluidyne rad, cosmo fuel pump, new oil injectors and injection lines, M2 ecu, M2 downpipe, greddy catback, magnecore 10mm wires, and new plugs, greddy blowoff valve, K&N filters, turbo timer, c's short shifter, RPS street clutch, ACT 9.5 lb. flywheel, my fuel injectors have also been flowed and matched by Marren Fuel injection at time of rebuild. I basically went all out and did all of this during the time of rebuild, but I had the ecu and 99 turbos on the car for around 125 miles before the motor blew, but the ecu wasnt enough fuel and thats why I upgraded the pump and injectors. Everything ran fine before disassembly, and with all the upgrades should be a really strong and reliable car, but i cant sort out my boost issue. I know its ignition, but i cant seem to find the source. I have done plugs, coils, wires, starter, igniter, crank sensors, etc... I need help!!!!

 

Did you upgrade the injectors or just have the stock ones cleaned and flow balanced?

 

Stock ones cleaned, flowed and balanced...

 

Not trying to steal the thread but, will the map being disconnected cause the car to bog down when shifting and getting on the gas hard?