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When i got started doing this.. the only widebands you could get were ones you had to build yourself with a parts kit from digikey and a circuit board out of Australia.. We did fine. You'll be...

For such a simple setup you can use the stock narrow bands to ball park in the wide open fueling. 880mv-900mv will normally have you at 12.4-12.8:1

Do you happen to know y=mx+b for that fuel pressure sensor?

Have you looked into EFiconnection?

I did a 502 Ramjet with a early setup that used a distributor and 411 then we redid it a few later with coil per cylinder. It ran on a C5 vette OS. Just...

A log might be helpful. Even if it doesn't run.

Mike Noonan at EFIconnection wrote a book about LS wiring swaps. He would be a good person to ask. I have his book somewhere and seem to remember a good section on A/C stuff. His book helped...

Those injectors are fairly old and are "lazy" compared to what is out now days.. You can get them to work just fine .. but having proper injector data is going to be absolutely critical.

But.... ...

I've heard people shy from them on street engines. I've never taken one apart and saw any wild wear.. People think titanium and whoo wow... Really it is almost as hard as steel but almost as...

You could.. and I would zero out injector tip temperature on this. There are plenty of OEM GM calibrations with it zeroed out with no issues.

Map sensor scalar/offset are defined.. should not...

Yes.. do this or somewhere in between is likely where it will end up.. maybe compare the differences and multiply the DIFFERENCE by .5

I'll back up what he's saying.. Sometimes that code pops up with a boost a pump too.. It doesn't make too much sense cause mods to cause it to flow more cause this "low flow" code.

The FP swings...

Looks like a reasonable start. There is a long explanation but the cylinder volume doesn't make a tune change but it will change the numbers in your VE table. Still it's best practice to set it...

I've never seen roller rockers make power on a LSX.

I've consistently seen them cause setups to nose over far sooner than they should. Weight over the valve tip is always higher and causes...

How are you measuring HP?

That is likely the issue.

Humm... maybe the test could be done a little more scientific. In the video it looked like FP dropped a bit and that is what the raw sensor looked like to me. I didn't/don't look at delta pressure...

This doesn't look like a very good tune at all. I'm sorry to tell you that. The timing table is very rough.. Its commanded to go super rich at WOT.

In the log its going into PE all the time.....

Thanks for the heads up.. I looked an it looked like it the gauge followed what was in the scanner? I must have missed it. I've recorded the gauge face and HPTuners logginng at the same time with...

The 07 6 cylinder trailblazer uses a computer (P12) that from our understanding never ran electric fans. There is no pin out to run electric fans.

We sell a kit for 07 6 cylinder trailblazers...

There is only a 4% difference between the two. You could just blanket scale the VVE/MAF by 4% to make up for it when the flex sensors actually sees pump gas at E10.

But really 4% is inside a...

Try this..

To me looks all TM related.


Also, I'd expect for 140 F IAT's with that much boost.. That will put the timing back to 0 with the way your main spark/Iat tables are setup.

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Really need to see a log. Try to get it to start and run even if its just for less than a min.

a decent portion of our customers say our initial tune is off.. when a IAT, MAP, etc is bad...

When converting to GM data from FORD you are doing a huge amount of extrapolating.

Here is a screenshot of our calculator doing this. The blue is the defined FORD data.. The red is...

Sometimes they just go bad. Have you tried a set of new GM knock sensors. Don't buy anything else.. Beware of counterfeits on amazon and ebay.

I assume you don't hear any knock audibly?

Do you have roller rockers on this? What type of rocker?

I agree that this mostly looks like valve springs.

I'll bet you have 20 rwhp in a good intake and a decent throttle body but that...

The fuel pressure looks reasonable on start up. This is a FPCM equipped truck so it has a sensor in the fuel line. I've never found them untrustworthy.

I would keep adding the to the starting...