scalbert

The only thing the higher boost would do to fuel pressure is increase the fuel pressure. Your fuel pressure with the standard pulley is about right so this lends credit to the culprit being a faulty boost gauge.

What are those EGT numbers you mentioned, it is in F or C and shouldn't creep above about 1500 F. Just to be sure, EGT = Exhaust Gas Temperature.

A clogged cat does happen over time but when it starts seriously failing it goes quickly. Heck, on the test stand I built for Calsonic I clogged a cat in less than one minute.

MtBikR

Sorry I am at work and have only look at my gauge in broad terms, meaning I never paid attention to the nominations of the units. Yes my EGT gauge is in F, and i idle around 1100 and climb into the 1300s under throttle, so I assume that detentation isn't a problem. Also back when we put in the nitrous and did the dynos, the car w/o n20, ran rich and we weren't having fuel issues at all. I just don't see why the gauge would work then not, hence maybe my cat. Still don't understand the noise either but it don't sound good.

MtBikR

Here a pick of my FPR, look okay? lines in/out, mounting?



might not show it all, only pic I have at the office.

ModAddict

Today we hit 40 degrees and the wideband was leaned out substantialy, 3-4 tenths. My question is, will the cold air by itself lean it out, or is the ecu telling it to to so based on an air temp sensor, or is there something else?

scalbert

That looks fine from what I can tell in that picture. But it doesn't show much.

scalbert

Yes, the total density will change to a point the stock adjustments will not be able to compensate since it is tuned for NA operation.

This is what I expected to be happening and why altering the stock pulse width with the e-Manage will provide better and more consistant tuning.

ModAddict

It was pulling like a mo-fo, topped at 11.8:1 This is going to be fun!