Javi802

Sorry if it's hard to tell in the video. I uploaded this from my phone.

Anyways, can anybody that is familiar with detonation tell me if my sr is detonating at around the 9 second mark in the video? Right as i let off of the throttle.

https://www.facebook.com/javi.flores...1101547253643/

Javi802

Right before i let off the throttle i mean.

hanzbrady

Ehhhhh that's really hard to tell. It sounds more like an exhaust leak than anything else in that video. Knock will sound like dropping marbles in a blender. Also if your running a stock ECU it's nearly impossible to see any kind of detonation. What's the mod list for the car?

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Javi802

Unfortunately it does sound like that. Another example of how it sounds is rocks hitting the bottom of the car.

Stock sr with PBM high mount intercooler, 740cc injectors, z32 maf, gt2871r running 15psi on an Rsenthalpy tune. Tuned my Martin, in person.



It only recently started doing it. I was wondering if maybe the fuel in it is bad. I've only driven it probably less than 500 miles in 8 months, but i have definitely put gas in the tank. Maybe the gas i had in it at one point was in there for too long and topping it off with fresh gas wasn't good enough?

I have some new spark plugs and a fuel filter on the way and was also thinking about changing the fuel pump because it has been in the car since i did the swap, which was about 3 years ago.

Any other things to check? Timing hasn't been messed with, fuel pressure hasn't been messed with.

EnergeticPhenom

Subbed* thought about running this exact setup

Upgraded fuel pump and fpr?

Javi802

Yep. If i remember correctly it's the isr 255 fuel pump and an aeromotive fpr