Started cat today ?'s....

Well i had timing nailed(getting a little better i guess), and she fired right up. I let the car go through the first heat cycle while burping the coolant system. Gauges are installed, exhaust is still a little loose, and some other tedious things before it goes to the shop for the gear install

Anyhow now for the questions.

Before these heads, i had it where it would idle halfway decent, now it will idle rock solid for around 7-8 minutes(timed it roughly), and then it is like it will surge up, have a really high idle for a minute. I unplugged the IAC motor, and it seemed to have no effect on whether it would do this or not. Can exhaust leak cause this? Can the JMS chip be off that much now that there are different heads on the car? I also seem to be having a fluctuation in my fuel pressure. (causes?) After the car shuts off the Fuel pressure gauge drops to around 18 psi instantly and holds that... It has a new 190LPH pump. i believe i have it installed correctly, i have a paxton fuel regulator on the car and a kirban waiting to go on? Could the paxton be causing the problem(is it boost referenced?) I will switch them this weekend,


I still haven't installed the MSD 6AL, so is it possible its the ignition. I am going to check the torque specs tomm., that will be the initial cool down check/retorque, i can change the FPR while the upper intake is off if anyone thinks that is the problem...


BTW>>>> sounds same at idle, but rev it I think i am gonna enjoy it(although i haven't driven it yet)



jason

i'm not referring to the first 7-8 minutes but an intermittent thing..... not warm up... car will already be in open loop.... and still the problem will occur..


jason

one thing i though of is that the car has a fact. temp thermostat, and when they did the chip, they tuned it for a 180 stat.....fan comes on early etc....


thanks for clearing up the open closed loop thingy...


jason