shutter while cruising Options

[rjbibeau]

i just got tuned on thursday at the dyno...only made 6psi cuz i have a clocked turbo and the actuator the way i have it mounted must not be closing properly. i trailered the car back and took the car for a cruise on sat. At 3000 rpm i get this once in awhile occuring shutter like the throttle stops and then regains itself. probably a misfire. and then i can't go above 5,000 rpm it hits a brick wall. also it threw a CEL so i got to autozone today to see what code it is. it's a misfire cylinder #1 and also of a lean mixture. would this explain my symtoms. lady said it's probably your FPR...this will give you excessive gas consumption. could the the stock regulator give me these problems? or am i supposed to be running an adjustable FPR. I'll ohm test the wires to see if they pass. the plugs all look good and the cap and rotor are relatively new.

also a question on those AEM universal FPR. i undersand you have to set base FP at 43. i have been reading to use a 1:1 ratio....is this somehow incorporated into this unit or does it have to be manually set. i know the vortech FMU is capable of doing this but is the AEM the one i want?

This post has been edited by rjbibeau: Jun 7, 2008 - 12:48 PM

[rjbibeau]

it taps into the map sensor. i'll post the dyno sheet soon as i can get ahold of a scanner. i'll post the maps and such when i get my g/f's lappy...their saved on there. it's almost like it being robbed of fuel. i'm gonna get a fuel pressure gauge to see if the regulator is working properly. it could even be a filter issue.