Is the check engine light coming on when the car acts up? If so a code scanner would help point you in the right direction. If it's not coming on, I would say just double, or it will probably be quadruple by now, check all your work and make sure nothing is loose. Pay close attention to the intake, where it attaches to the throttle-body, and the breather hoses that come off of it to the crankcase and idle-air control. If any of these connections are loose, cracked, or not hooked up you will be drawing air past the mass-air meter, and that could case a power problem. (The car would think it's lean at the O2's and add too much fuel to compensate) I would expect idle issues if the leak were very bad, but it's worth looking into. Also, did you check the plug gap? Sounds like a stupid question, but sometimes one of the plugs can hit something going in and change the gap. Other than pulling them to make sure, the wires are the only other thing, they can be a real bear to get back on the plugs.....so double check that too. Good luck!
1993 Grand Marquis w/170,000+ miles and counting. Now it's time to make her FAST!!!
12" conical K&N filter, Custom side exit exhaust with X-pipe and Dynomax Super Turbo mufflers, replaced stock fan and clutch with PI electric fan and PSM fan controller, Aluminum PI driveshaft.
Body mods include a '95 Cobra rear spoiler, tinted windows, 17" Mustang Split 5-spoke rims w/ P255/50-17 BFG g-Froce TA radials, and a 14,000lb Auxillary Trans Cooler.
Interior: Custom A-pillar guage pod w/ Digital oil pressure and Trans. Temp. guages.