I'm having a knock issue with my car as the past month. I have a IX, with tbe, cat delete, nisei upper & lower intercooler pipes, aem intake, and mbc set to 23 psi. This is on 93 octane. The car was running great after I got it tuned back in November. Now I'm getting about 8 counts of knock, and was running pretty rich. Any help would be appreciated.

 

Umm tuned by Mellon? Why don't you send them to him?

 

Just figured some one on here would be able to help me out. It's been almost a year since I got the car tuned. I'm thinking it's the gas in where I live. People have been getting water in there in gas as of the past couple months

 

Hey Nate, I sent you a revision, give it a whirl !

 

Thanks a lot chris. I will give it a try tomorrow.
Thanks again I really appreciate it.

 

anytime Nate!

 

wow chris is the man

 

I ended up needing to pull as much as 3* of timing in some places before the knock would subside. I compared these logs to the original and they are practically identical aside from the obvious knock issue. It seems the octane has diminished there. This is the second customer this month that went from perfect tune to terrible overnight. The previous one said his entire city went to 91 octane without notice first and the prices weren't dropped accordingly. Seems outrageous to me. Anyway Nate is back on the road knock free but undoubtedly down on power

 

Thanks a lot Chris. Can't thank you enough. Even after it being almost a year since I got my tune; you helped me out no questions asked. Thanks again for your input on a couple of questions I had.

 

you're very welcome Nate, it's pretty important to me that my customers cars run well. You ought to get some gas out of town sometime and roll back to the original tune just to see how it behaves.

 

I would love to, but every gas station that I used to go to with 93 octane within an 1.5hrs has all gone to 91 octane. I have a case of torco fuel addictive on the way now. Hopefully that will bring my octane back to atleast 93. I let you know how it works; when it comes in.

 

wow that's unfortunate...I have a customer in Cali on their nasty 91 that uses torco and I was surprised at how well it worked for him...hopefully you'll have similar success and be able to roll back to the more aggressive tune.

 

I am a big fan of people learning to tune their own ecu, but even I'll admit thats goos customer service.

 

no doubt this was an easy "fix" but like I do with every customer I told him where I made changes and how much so if he wants to learn from my changes he can. Most of my customera aren't interested in learning and just want their car taken care of by a professional. I have quite a few people that bought tunes from me that learned how to make adjustments as necessary...heck a few of them are now "tuners" on evom and some started shops.

 

Update, today I added 32oz of torco additive to a full tank of gas. Was able to go back to my original tune. I did 3 logs, and got zero counts of knock on all 3 pulls. Stuff seems to work pretty well.