Riviera from hell

Its been a fun day today you guys ... who ever said changing the lower intake gasket was fun and with short term memory oh man what a job this is .... installed new fuel filters cleaned around the injectors replaced plenum and lim gaskets 180 degree thermo is in full effect all of this while trying to sober up from a funday night

Good looking car, dude.
I like the balance of the optional gold trim and the more outrageous tires/rims.

First thing you gotta' do with that PCM BS is have a GM dealer check it with a Tech II...

That's a nice backdrop Johnny5... haha... good looking car from afar though. Are those 20s?

Eldo wrote:

Good looking car, dude.
I like the balance of the optional gold trim and the more outrageous tires/rims.

First thing you gotta' do with that PCM BS is have a GM dealer check it with a Tech II...

Im aeroforced scan guage is on deck fuel trims is still messed up

ZEP wrote:

That's a nice backdrop Johnny5... haha... good looking car from afar though. Are those 20s?

Only problem is the paint fading to the roof and trunk but other than thats is good looking up close too just didnt want my plate tags all over the internet

Wth this is after the change of the lim gaskets

Just order my 3" dp with CAT from zzp hbody style

So im like whats next, I got this big mother effer today should I bolt this on asap or stay catless?

Well, cats these days (especially performance cats) don't create the power-robbing backpressure that the original GM pellet jobs did in the 70's & 80's...

The rest depends on Louisiana's smog laws and your own eco-conscience.  

This how I spent my Wednesday doing this to make sure I dont have vacuum leaks

Does the catted pipe from ZZP go right in or did you need to make modifications?

Johnny5 wrote:

This how I spent my Wednesday doing this to make sure I dont have vacuum leaks.

GOOD boy!    

Those are aluminum gaskets, right?

Eldo wrote:

Johnny5 wrote:

This how I spent my Wednesday doing this to make sure I dont have vacuum leaks.

GOOD boy!    

Those are aluminum gaskets, right?

Yes sir they are revised alum. ... and my car is still running lean so im not going to put it on yet and its supposed to be a direct fit its the h bodyit was listed under the Riviera

Nice work!

Nice work. I still think you should make sure all of your issues are resolved before you throw that downpipe on there.

That is my goal deekster this is my second time in this engine and I cant figure out the lean code reasons and thats the reason why that down pipe is sitting in my living room

What is the pulley under the supercharger assembly called

Johnny5 wrote:

What is the pulley under the supercharger assembly called

The pulley immediately under and just right of the S/C snout is the Tensioner Pulley/Assembly.

Like bigDave has suggested, if your vacuum lines are all good, the LIM gaskets are new, and your Air Intake Box/tubing is all leak-free, I'd be looking at the MAF sensor for a problem.
One thing you can try is unplugging the MAF sensor while monitoring the STFT. Let the car run for awhile with it unplugged. If the STFT creeps up and pegs at the 16.4% again, chances are, there is still an air leak somewhere. If the STFT stays low, you might just have yourself a bad MAF.
This is more or less a "backyard" way of checking the MAF sensor. Without a MAF frequency tester thingy (I forgot what it's called), there's really no way of knowing it's bad. Well, with a MAF table and corresponding TPS values one could verify its function.....

Abaddon wrote:

Johnny5 wrote:

What is the pulley under the supercharger assembly called

The pulley immediately under and just right of the S/C snout is the Tensioner Pulley/Assembly.

Like bigDave has suggested, if your vacuum lines are all good, the LIM gaskets are new, and your Air Intake Box/tubing is all leak-free, I'd be looking at the MAF sensor for a problem.
One thing you can try is unplugging the MAF sensor while monitoring the STFT. Let the car run for awhile with it unplugged. If the STFT creeps up and pegs at the 16.4% again, chances are, there is still an air leak somewhere. If the STFT stays low, you might just have yourself a bad MAF.
This is more or less a "backyard" way of checking the MAF sensor. Without a MAF frequency tester thingy (I forgot what it's called), there's really no way of knowing it's bad. Well, with a MAF table and corresponding TPS values one could verify its function.....

Thanks don... but I took a picture its on the aeroforce they are both pegged at the max sooo....whats next?

So let me ask if the custom intake will that cause this problem

Okay Mr. ABADDON I have done what you have requested I should do and here is the footage.

Click on it to see I guess and dont mind me being a dork. But im thinking your idea worked really it did....

Progress! With the MAF unplugged, the car is forced to run "base" with the O2 readings. If your car had a vacuum/air leak, the O2 would still be reading lean, and the PCM would still be dumping fuel to try and cure it. It appears that you don't actually have an air leak somewhere...

It'd be cool if you had a known good MAF from somewhere that you could plug in and verify function. We have many, many good used MAF sensors here at the shop that we use for diagnosing pesky problems like yours. It's rare that a MAF actually goes bad, but when they do, they will drive you crazy trying to figure it out. See if you could possibly pick one up from a salvage yard. Preferably a salvage yard that offers like a 30 day warranty or something similar should the one they sell you be bad.