Dyno results

[ZO6 Bryan]

Originally Posted by revo1059

At $500 I’m tempted to just go with the DSX auxiliary system if my BAP is dead.

Check your fuel pressure at WOT and make sure it is not dropping. If you have enough fuel pressure then your tune is way out of whack. You are dangerously lean and risking melting a hole in a piston. And notice how much your torque drops at the same point the engine goes lean. It has the potential to make a lot more power.
And the DSX aux pump is more like $1000 not $500.

[ZO6 Bryan]

Originally Posted by ZL1blue

Can You tell me what you think of my dyno? I just did the pulley upgrade injectors and headers. Not sure how to read the air/fuel ratio. Thanks

Your graph and AFR looks really good.

[revo1059]

Yeah, should have clarified, the aux pump is only ~$500 more than the BAP.

Whats a good range for pressure at WOT?

FYI, the cam I have is the specs you gave me a few years ago.

[ABADZL1]

Originally Posted by revo1059

Yeah, should have clarified, the aux pump is only ~$500 more than the BAP.

Whats a good range for pressure at WOT?

You should make 65psi

[ZO6 Bryan]

Yes 65 psi at WOT
This is what my dyno looks like with same cam and 10" pulley. Yours should be similar.

[DrkPhx]

^^^ Those are great numbers especially SAE on a Dynojet.

[revo1059]

So I looked at the BAP (MSD 2351) and it’s flashing a code 31, over volt - on output. Any ideas on how to deal with that? Can’t find anything on MSDs site about it other than the code and what it is.

[ZO6 Bryan]

I still think there is something wrong with your tune. Even if fuel pressure drops the PCM knows it and increases the pulsewidth to compensate. Unless your pressure is REALLY. REALLY LOW.

A properly calibrated MAF table is key. If commanded AFR is in the "11's" but the car is that lean then the MAF table is wrong!

[revo1059]

I used Track Addict and my BT OBDII adapter. When I mashed the throttle pressure went from 49 to 59 lbs. I had a passenger who was watching the readout and dummy me didn't record the session .

It's supposed to be 70 on Thursday here (it's snowing right now...yea) so I'll try and get another reading and actually record it.

[ZO6 Bryan]

Originally Posted by revo1059

I used Track Addict and my BT OBDII adapter. When I mashed the throttle pressure went from 49 to 59 lbs. I had a passenger who was watching the readout and dummy me didn't record the session .

It's supposed to be 70 on Thursday here (it's snowing right now...yea) so I'll try and get another reading and actually record it.

And it's not when you first mash it that you have to worry about. It will come up as expected at first but it may be dropping as you get up in the higher RPMs.

[revo1059]

I found the issue! It's not a code 31, it's a code 13 the BAP is displaying. According to MSD that means the BAP isn't seeing the fuel pump, so something is most likely mis-wired. Does anyone have a ZL1 specific diagram or info on where to grab the positive wire coming off the fuel pump before the FPCM?

[hammdo]

I have the ADM FPCM and an MSD BAP on mine. No issues:

http://www.camaro5.com/forums/showpo...postcount=1166
http://www.camaro5.com/forums/showpo...postcount=1169
http://www.camaro5.com/forums/showpo...postcount=1170
http://www.camaro5.com/forums/showpo...postcount=1171

I used the software for the MSD to set it up, no retune...

ADM LSA SC kit installed etc...

-Don

[ABADZL1]

I've never heard of a bap being wired directly to the pump wiring. (If this is what you are thinking) Mine (jms) connects to the fpcm wiring rite off the fuse block. Do you have an install guide for it?

[revo1059]

Originally Posted by ABADZL1

I've never heard of a bap being wired directly to the pump wiring. (If this is what you are thinking) Mine (jms) connects to the fpcm wiring rite off the fuse block. Do you have an install guide for it?

I don’t. The info I got was from an MSD tech I spoke with today in regards to the error 13 code the BAP is flashing. He specifically stated that it can’t run into the FPCM as it could try to reduce voltage if it sensed the BAP boosting it. I did let him know what I was using it on, so I’m ....assuming.....he looked it up.