Reduced power P1516 P2101 truck 88mm TB car OS 07 CTS-v base file etc scaller maybe?

[04colyZQ8]

Motor is a 2007 lh6 5.3l aluminum block flat top pistons, 243 truck heads, ls3 springs and cam, Brian tooley/comp .80 pushrods, ls2 intake, volant cia with ls7 maf, ls7 lifters, dod deleted. 2007 ctsv 6.0l e67 base OS 58x pcm. T56 trans 88mm Gen IV truck TB.

I got my low VE, and maf dialed in 90% of the way, thanks to members help on her, pervious thread. But faced with a New issue, this is preventing me from tuning high maf, and PE, seems to come in around 60-70% pedal position, and I get reduced power, and P1516, P2101. I can set P1516 to 60%, but EFi doesn't let me do P2101 (in the salve) Hp tuners can, but that's another 100.00 credit to the competitor, I do own hpt, but prefer to use EFI. Sorta a band aid fix though, lets try to actually fix the problem? Should I try and change the etc scaller, with past experience this can cause a reduced power and pcm processor fault message? Why does a 2006 SSR scaller differ from a 2009 Colorado etc scaller they are the exact same TB 88mm truck gen IV??

IDK what to set my etc up too? Key one full throttle np, so I think this TB will work isn't it only 2mm smaller? is this really going to make that much difference?

[joecar]

Are there any tables that show up in the tune file when you connect FSV2 to your PC (i.e. red folders)...?

~Moderator~

[04colyZQ8]

I don't think so? No really sure? what you mean? You guys don't write the salve do you? I just maxed everything I could find related to throttle out, and that fixed P2101 but not P1516, I have hpt tuners version 3, and a cable, but it will cost me 100.00 in credits. They write the salve and you can edit P1516, just like P2101.

I have a program that will write the salve, if someone can tell me were the P1516 parameters are on the salve, and how to update the checksums, I'd be golden, I can work in hex, and write the salve.

[04colyZQ8]

P2101 equals PCM, P1516 equals salve its in the 12601915 engine salve, if someone has a AL2, and checksum info please PM me.

[04colyZQ8]

Are there any tables that show up in the tune file when you connect FSV2 to your PC (i.e. red folders)...?

~Moderator~

only red folders I see regarding throttle are response tables, and I don't see them being the issue?

[wesam]

I'm fighting the same issue p1516 since 2 months with LS1B
I did every thing also ordered New boosted NW102 throttle without luck
It just happened with partial throttle when the turbo spools
I hope aome body could help us

[04colyZQ8]

Ok so playing with mine, and I found key on engine of it even hits reduced power, after rapid pedal movement, trying a different tb!

[04colyZQ8]

I'm fighting the same issue p1516 since 2 months with LS1B
I did every thing also ordered New boosted NW102 throttle without luck
It just happened with partial throttle when the turbo spools
I hope aome body could help us

Yours could be converted to cable tb? That would solve it, what os are you running? What pedal? Try a ls7 tb your problem is the boost pressure is probably physically blowing the blade open or shut more, ls7/lsa tb is meant for boost and rotates the other way?

I have experience wirring 8-6 wire and making non standard tbs work sometimes, it's a physical tps adjustment I make that works.

Try turning down your boost to bare minimum and see if it still gets p1516, I doubt it will.

[04colyZQ8]

Fixed set p1516 to 80% with hp tuners, and p2101 to 80% with efi live

[04colyZQ8]

Too bad I had to use hp tuners to fix the slave, maybe EFI will add the salve flash and P1516, in the future? I now know the hex address of the P1516 in hex.. wink, wink to a mod:)

Could I write a CAX for this? likely not write? because Efi doesn't flash the salve?

Is this a good thing to do, should I try a lower value, now that I know this works? It went full throttle several times now, no issues. ?

[joecar]

...

I now know the hex address of the P1516 in hex.. wink, wink to a mod:)

Could I write a CAX for this? likely not write? because Efi doesn't flash the salve?

Is this a good thing to do, should I try a lower value, now that I know this works? It went full throttle several times now, no issues. ?
If you know the address/offset of the object and its attributes (format, size) I can help you write a cax file... study the attached example cax file (if you need enumerated values, I'll find another example).

[04colyZQ8]

I do know that info, but what good is it, if you can't flash the slave? It's on the second chip.

[joecar]

Ah, I see.