sr20det stuttering prob. HELP

[drifspecs13]

SR20det is stuttering after 60 percent throttle, my solutions were new iridium plugs, and full fuel system clean. Problem solved. 1 month later problem persist. Can't figure it out, my S-AFC isnt drastically tuned, I even set it back to default for testing purposes, still same.HELP. I have street racing this weekend;-0)

[240_Keyy]

it is your MAFS. how is your idle, does it get worse or better if you unplug the MAFS? if it gets better then your MAFS has a problem.

[SrS13]

check ur timing

[MojoMan]

SR20det is stuttering after 60 percent throttle, my solutions were new iridium plugs, and full fuel system clean. Problem solved. 1 month later problem persist. Can't figure it out, my S-AFC isnt drastically tuned, I even set it back to default for testing purposes, still same.HELP. I have street racing this weekend;-0)

Sounds like your running rich enough that your fouling the plugs out. MAF, IC leaks-pipes, vacuum-proly not but...Check the MAF wire as well, but unplug to check idle. Use that electrical cleaner spray and clean the hell outta it. Dont touch the element unless your useing a water color brush of some sort. Also check your gaps on your plugs to make sure they are gapped correctly. And you can see if they are fouled out at the same time. Also your afc being under tuned can be just as bad as drasticlly tuned.

[Drakon]

Umm just a possiblity but make sure you dont run to low to empty on ur gas tank unless you've had it cleaned out. That might be causing it. u know, junk at the bottom of it.

[solaris22]

Had this problem, FMIC hose clamps wern't holding the pressure. Nothing a little RTV gasket sealer can't fix

[projectsr]

Possibly a very small boost leak. Check your hoses, I/C piping, etc. Or check the stuff mentioned above.