OK Here's The Scenario

[s8tan]

I have a 2001 Mazda Protege ES 2.0 5spd. I've installed a......

J-Spec Intake Manifold(FS-ZE)
Bosal 4-2-1 Header(93-95 Mazda MX-6)
Custom 2.5" Cat-less exhaust system.

I installed the intake manifold myself. Then 3 weeks later i had the header exhaust system installed. Did a dnyo pull. Picked up the car. On my way home excited from the mods that i had done i decided to hammer it a bit off the light. POOOF!!!! The blueish/black smoke coming from my tail pipe was insane. So i installed a air/fuel ratio gauge. At WOT the car runs pig rich.....it has been running rich for a month now. I took to a garage here, and the mechanic noticed the the vacuum lines for the VICS and VTCS controllers where installed backwards. Forcing the VTCS to stay shut. Fixing this problem toned down the richness a bit.....Also not to mention that my EGR is blocked. Then he ran a compression test, and a leak down and everything is fine. Its the fact that i'm running rich.....Why the hell is this occuring? Could someone shed some light onto my concerns.

 

[falkofire]

what kind of a/f ratio gauge is it?

 

[ChopstickHero]

could be that your ECU is overcompensating for the FSZE intake manifold by adding too much fuel. this is due to the fact that the FSZE intake manifold is bringing in more volume of air, so it adjusts the air/fuel ratio accordingly, which is obviously running rich. the NA ecu was never intended to be used with any parts of the FSZE, so you have to find some way to retune the ECU to adjust the air/fuel.

 

[EVILSRT]

Damn, I thought the blueish smoke meant a bad head gasket.....

 

[s8tan]

Thanks for that response ChopstickHero. What are my options here? What do i need to do to stop the maddness........

 

[s8tan]

BUMP

 

[TheMAN]

I guess you didn't like the answers on the other board
the cause of the problem would be....
a) you hooked up the VTCS and VICS solenoids backwards... which means at the VICS activation point, the VICS doesn't work although the ECU think it does because it just triggered the VTCS solenoid... and now the ECU is using the fuel maps for the opened VICS runner... guess what? RICH... your VTCS solenoid does absolutely nothing other than making the ECU happy (but moot point when you read B)... you no longer have the VTCS butterflies.... so at high rpm when your hooked up backwards VTCS solenoid activates, it does nothing to anything mechanical... did I mention on cold starts you go super lean because your VICS opens?
b) you ripped out the cats and installed headers... guess what? check engine light... ECU goes to limp mode... RICH
c) you didn't hook up your EGR system... so that also fubars your fuel mixture at cruising speeds

now I wonder what's wrong with the car...

 

[FrigginGLI]

So basically he really messed his car up.