Supercharged 5.7 is backfiring at heavy throttle

Any 5.7 supercharged tundra owners in this group? Quick questionn

 

My 2012 Crewmax 5.7L is TRD Supercharged.

 

Trying to figure out why my 07 is backfiring at heavy throttle only code I am getting is secondary air injection pump but it’s suppose to be bypassed

 

No idea. Thankfully, I've not had any issues with mine but then again mine is not a daily driver.

 

Sounds like it's not bypassed correctly?

 

Was wondering I was told that it shouldn’t cause power loss and backfire but I m new the the supercharge tundra scene

 

Casual driving with lil boost runs like a top but when I kick it it backfires and like holds back

running like 8psi of boost but when it hits around 8 that’s when it wants to backfire

 

Are you getting black smoke out the pipe?

 

@1UPPER

 

The TRD or the Magnuson topped out at 7psi... My guess is that it is modded and not tuned accordingly.

What gas are you putting in? It needs minimum 91 preferably 93.

 

You need to take it to a supercharging tuner (Magnuson.com has a installer finder tool) and have it plugged into the computer. It could be so many different issues that you need the tuner to PinPoint or you’ll spend weeks unnecessarily changing parts.

 

Stock pulls no smoke

 

I’m running 93 and it’s TRD SUPERCHARGER

 

What happens if you start the truck and it warms up and then you clear the code? Does the code come back while it's running?

 

Code doesn’t remove when I try to clear light goes off the lights back up instantly

 

Magnuson made the TRD supercharger.

 

Oh ok I didn’t know

 

How many miles? Plugs were changed?
Does it really have the oem supercharger tune in Ecu?
Check the calibration number .
Some installed sc’s and ran them on the stock tune.

 

According to paper work I got it was tuned to ecu and trans tune

 

Also a SC'd member...your timing sounds like it might need a finer tune...what fuel do you typically use?

I am VERY happy with my OVTune for what it's worth...it blends a safe tune with an optimized TCU tune that works well together...

 

I’ve been running straight up 93 since I got it I thought it maybe have been low octane cause when I got it I ran 89 in it by mistake

 

To reiterate I would try to fix the code and start there, see if there's something wrong with the IAP bypass you have. There's nothing wrong with the TRD tune in my experience which sounds like what you have. There's an obvious issue of having a CEL, I would fix that first.

 

Reason I was asking about the smoke is if your plugs are worn. They can jump the gap and lower cylinder pressures/low throttle, but once you get on it it can't jump the gap and it starts to miss. Which can feel like it's pulling power. That's all I got... Good luck man.

 

Thanks I guess maybe the sai bypass may have went bad I am shooting in the dark really


Maybe the bypass to the air injection pump is bad who knows

it doesn’t do it as bad when u go from like 40 and kick it it’s a lot worse kicking it from take off

 

Did you check the plugs.

 

@ViktorG i bet would know

 

Plugs are good

 

What are the codes?

 

The secondary air induction is the code