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

[95celicastLSR]

To me it sounds like ur car is tuned at WOT and nothing else its a set back from using safc..also sounds like ur having timming issue..AEM makes a piggy back system that controls fuel and ignition and the correction is 100% rather than the safc wich is about 50%..the best thing about it is if u take a n/a car and boost it your goin to run in to alot or timming issues and risk running to lean and detination so this piggy back allows you to correct the timming check it out on AEM's web site..its made for n/a cars being boosted and it is better software then the greddy emange...hope this helps you out a lil bit man..