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Higher octane simply doesn't combust under pressure (knock). More compression or boost, higher octane required... Sent from my Pixel 2 using Tapatalk

So another update, hopefully I might help someone else that encounters this. The P0455 code came back two more times and I just cleared them while telling myself that I know I missed something somewhere when I did the plugs... Well I looked and looked with no luck and then today I finally saw...

Update: I cleared the code, and did a test drive. No problems. I installed the harness and the plug in the harness (no chip). No problems. I installed the chip and ran with it off. No problems. I ran econ mode then sport mode. No problems. So,no problems. I'll put 100 miles on it...

It's not the gas cap....I checked :) Sent from my Pixel 2 using Tapatalk

P0455 Evaporative Control System ? Large Leak detected. Now to figure out what to make of it. Sent from my Pixel 2 using Tapatalk

I'll find a diagnostic tool today and see what code was thrown. I find it hard to believe it's plugs after 100 miles on 93 octane in sport/sport mode Sent from my Pixel 2 using Tapatalk

Running regapped oem plugs. I was in sport/sport mode and just downshifting to a red light. Sent from my Pixel 2 using Tapatalk

So I got a CEL on the way home tonight. I didn't notice anything out of the ordinary and I checked all of the connections when I got home but all looks fine. Any suggestions? Sent from my Pixel 2 using Tapatalk

I literally regapped the stock spark plugs two days ago, received the product last night and installed it. My timing couldn't have been worse. Is there some explanation from Racechip engineers as to why new plugs are preferred over regapped OEM plugs? (My assumption can only be the heat...

What has everyone found to be the best method for keeping the black chrome plated plastic pieces on your cars shiny? When those parts are clean, they're beautiful but when they have streaks or water marks on them...not so much. I haven't tried much beyond just washing them and real mild cleaners...

I just reduced the gaps in my OEM plugs tonight in anticipation of receiving the chip, it is a pain and it took me about 2 hours of time actually at the car. If you do it, remember where the short and long bolts go that look the same until you go to put them back!

Cat hater, very good question. My understanding is that the various levels of heat dissapation designed in to the plugs dictates the heat level. Higher heat dissapation = colder plug design. It's my understanding that you would want plugs hot enough to burn up residue left on the tips of the...

Hi Jon - thanks for the update. I'm curious about the performance of the engine now that you have the smaller gap and colder plugs under lower boost conditions. (not race mode) Does it idle and rev smoothly with the race chip off? I don't plan to run in race mode and high boost conditions...

Thanks for the info. Sent from my Pixel 2 using Tapatalk

Cross posted with another Racechip post...hard to keep track. So I just ordered the Racechip GTS Black and I'm wondering what the latest consensus is on plugs? Here's my understanding of options (all assume 93+ octane fuel in the US): 1) No change. Low performance tune. Chance of plugs...

So I just ordered the Racechip GTS Black and I'm wondering what the latest consensus is on plugs? Here's my understanding of options (all assume 93+ octane fuel in the US): 1) No change. Low performance tune. Chance of plugs fouling is high. 2) Gap OEM to ~.026-.028" . No misfires for 1000+...

None here, bought in April though... Sent from my Pixel 2 using Tapatalk