2088 msp

hi, im ivan, just moved back from tally, fl. i've got a 03.5 sunlight silver MSP. there are a couple of things done to it, nothing major. Looking forward to meeting up with fellow car enthusiasts in the area.

its a pic from last year but that's pretty much how it sits right now.


this is one is from the 2010 TFMMC meet in orlando.


now the problem i'm having is its stuttering while under load in boost. as in, i can rev it all the way up to redline while in neutral or parked, but if im actually driving and want to "give it the beans" it starts stuttering past like 3psi and 25% throttle.

Tried swapping the MAF, MAP, FPR, injectors, plugs, coils, WGA, TPS. cleaned the egr.
tried adjusting the tps.
plugs are properly gaped.
tested the compression.
tested the timing.
tested the fuel pump. all checks out.
Tyrone Mazda says the ecu is up to date and fine.

only thing left is fuel pressure damper, other than that i'm out of ideas. WTF!!!?!?!?!?!?

2088 msp

here u can sorta hear and see the stutter on the boost gauge:
video-2011-10-14-20-22-58.mp4 video by jchimei - Photobucket

Rey

-moved to the meet and greet (newbie forum)

welcome!

2088 msp

i was i like where did my s*#! go? i figured it would get moved. anywho, here's an old video, u can sorta hear and see the stutter on hte boost gauge:
Mazdaspeed protege boost stutter - YouTube