GM 5.3 3RD GEN cam swap and headears bog on WOT

[LuhReik]

5.3/th350
At.50inch lift222int/232exh 112+5 .550/.550 CAM
long tube headers
walbro fuel pump 255LPH

Hopefully someone can help me out, im new to tuning

i ls swapped a my nova with just cam and headers

idles fine i guess but the timing jumps around
but the main thing is when i go to hit WOT it wants to bog down and pop likes it not getting the fuel

THANKS IN ADVANCED
g3 ls p4.hptLS 5.3 CAM SWAP HEADERS DATA.hpl

[LuhReik]

could be my injectors idk the inj duty looks a little wonky at times
running stock injectors by the way

[RDF1]

I dont see a wideband input in the datalog.
And timing is in the single digits so its going to feel really weak.
Have you checked your fuel pressure?

[LuhReik]

yeh im going to get a wideband today my other broke

[5FDP]

Needs more injector too, for sure because you are going to go higher than 6,000rpm with this camshaft.

Stop flooring it if it's untuned like that, you're going to hurt something. You need to redo the whole airflow model before you start worrying about how it bogs when you floor it.

Double check your fuel pressure too.

I can't edit your tune as I use the older MPVI but you still need to setup the tune for the camshaft. The idle and timing settings need more changes, abuse mode on the engine side needs changed, set to 7,000rpm and 0mph. In the systems tab, systems options the brake torq mngt needs to be set to zero.

[04silverado6.0]

You can try this, im sure its a better start than you had.

[LuhReik]

alright thanks definitely going to try with the timing and airflow

[LuhReik]

You can try this, im sure its a better start than you had.

alright ima try it tommorow

[edcmat-l1]

First thing you need to do is put a fuel pressure gauge on it. Preferably one you can see while driving. No tuning adjustments should be made without first confirming you have adequate fuel pressure at all times, not just idle.

[LuhReik]

First thing you need to do is put a fuel pressure gauge on it. Preferably one you can see while driving. No tuning adjustments should be made without first confirming you have adequate fuel pressure at all times, not just idle.

yeh im going to get one

i checked idle its at 70psi which is hella high
but i dont know driving
im running a cheap amazon corvette filter which is supposed to be 58psi

[LuhReik]

You can try this, im sure its a better start than you had.

Yeh it?s hell of a lot better

[RDF1]

yeh im going to get one

i checked idle its at 70psi which is hella high
but i dont know driving
im running a cheap amazon corvette filter which is supposed to be 58psi

The factory C5 vette filter/regualtor is suppose to be 58psi with the factory pump.

Im pretty sure you can see your problem above in red.

Get a wix filter and try again.
Ive thrown away so many of the cheap filter/regualtors i cringe when somebody brings me something to be tuned with one of them dang things on there.