i tried the single turbo section and had no help... i have a single turbo FD and just noticed yesterday that the rear exhaust outlet of manifold to the turbo was glowing red at idle...not super bright but if u were in the dark it is visiable.. any help or recomendations.....car has been single turbo for a few years now and this just started.....no cats...no intake leaks...9's for plugs.......suggestions ???

 

Running rich? Do you have an AFR gauge?

 

yea i have an afr and it reads 13-13.5

 

Either going to be a fueling or timing problem. Car runs good otherwise? How does it idle?

 

If you're manifold glows at idle it's one of three things.

1) Plugged cat
2) Running lean
3) Timing

You are catless so you're clear of one problem. Check your base timing & A/F then you will find your problem.

 

If you're running 13 to 13.5afr at idle, and just the rear rotor is glowing, one of two things is probably going on. You are either running really rich on the front rotor and really lean on the rear rotor, or you have some sort of ignition problem that is concentrated on the rear rotor. Check for fuel flow from the primary injector for rotor #2, and check to make sure you have a good spark on rotor #2.

 

idle is smooth and around 1000....timing has never been messed with on my PFC....next step i am gonna take is taking my primaries out and sending them to RC engineering to get cleaned and flow tested.....am i taking the correct step??

 

your idle shouldnt be that high.

even streetported motors run a rock solid 800rpm idle

 

was this after a drive?

 

What size primary injectors do you have? On the PFC injector screen make sure the injector pulse percentages are the same for both primaries, I have had cars come in where one was 63% and the other 100% where the previous tuner set the injectors up wrong, then cranked the idle up to compensate.

 

not after a drive...just started and idling....cant remember why i set idle at 1000...just a smooth idle number i guess or maybe thats what it was smooth at before i replaced a couple sensors a while back and just kept it there....And thanks fotr the info BANZAI ...gonna go double chk that right now... i was looking at it yesterday and i thought i saw different numbers different

 

so my settings in injectors were as 99% and 95%....i set them both to 99%...is that acceptable....should they be 100%...???

 

Are your primaries 550's? If so then they should both be 100%. If they are larger then they need to be less than 100%, for instance if they are 850cc then they need to be 64.7%

 

they r 550's......

 

Ok, so now what do you have the injector lag set at?

 

i believe its 0.0ms
10.0ms

for both....does that look correct??

 

and that is primaries 0.0 and secondaries .10

 

0 lag time for the primaries is correct. Without knowing what your secondaries are I could not tell you however the secondaries will not cause this problem anyway. Which injector was at 95%?

How much vacuum does the engine pull at the 1000rpm idle?

Now that you have set the primaries where they need to be you need to get the idle down to 800 or so.

 

i have 1600cc secondaries.......and vacuum at idle is just shy of 20 on the gauge and showing around 500mmhg on the pfc...i do have a new isc solenoid coming too cuz mine stopped working correctly.....

 

Sounds like the rear primary is culprit, but...wonder if carbon build up on the rear rotor could cause the compression to increase? I would run a compression test on both housing to get an idea on the internal state of things.