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I think it’s the under tray, i just can’t prove it. it’s really annoying and it makes my car sound like horrible. any idea on how to fix? it happens in the beginning of the clip i sent

My knock control keeps rising to .6 after like not even a pull, just slight acceleration. any way to fix or do i need to pull the plug on an intercooler

Why do i only see people running e30 blend and never e85?

if this video is true then why are people so scared of blow off valves?

i currently have a 27won downpipe, prl front pipe, and thermal r&d exhaust. i kind of wanted to get a little louder. Should i cut off my resonator? i am scared of drone though

I just saw an si with a hood exit and i NEED that. If i were to make one, where do i put the o2 sensor?

If i were to upgrade the turbo to lets say, a 27won gin turbo, would i be able to run an external wastegate?

I just purchased the phearable race tune for the 22-24 civic si. I am still waiting for them to ship it to me, but in the meantime i was wondering how much whp i could expect. the Website said that id be making 246whp and 29X wtq on a STOCK civic si. I have a 27won dp, prl fp, prl sri, and...

I wanted some wheel and suspension setup recommendations, was mainly looking for gloss black, chrome, or white. I’ll also do bronze if they’re nice wheels. I also wanted a nice fitment so i can lower the car a little bit without rubbing but a clean fitment. I wanted like an offset that’s as much...

If i made 350 whp with an 11th gen civic si, what cars would i be able to beat on a straight line race, and would it just be worth it to spend 15 grand to trade my car in for a faster one.

I wanted to remove pops and bangs from my cars tune. To create the pops and bangs, I increased fuel cut time from 40ms to 280ms. I don’t really like the pops and it’s kind of annoying, but to remove them, would 0ms be too little fuel cut? or should i just revert it back to 40ms

I finally purchased the thermal r&d exhaust, but in the picture of it on their website, i see a nice rear diffuser. Does anyone know what brand it is so i could purchase one?

I was looking at some pretty nice front lip and side skirts, but most rear diffusers look kinda ricey and have all those bumps and stuff and those LEDs are even worse. does anyone have recommendations? and if u have recommendations for the rear diffuser if you can send me a front lip and side...

does ANYONE have good clips (not only from close up) of a thermal r&d exhaust with the 27won downpipe or even any downpipe that’s not factory?

should i get a resonator delete? i’m scared it’s gonna be a bit too much but not sure. i currently have a 27won downpipe and it’s fully cleared out but it’s still not loud enough for me

is there a way to change the interval in which the rpm’s bounce off the rev limiter when i select an rpm with my tsp tune for launch control? i have a ktuner

i wanna be a ricer so when i launch control i build boost and make big pop and fire how do i do that with a ktuner

why have i never seen an 11th gen si shoot or pop little flames without a flame kit like some of these golfs do?

how can i make my 2 step pop/shoot fire like all these other cars do

do exhausts and downpipes usually get louder over time significantly or am i having an exhaust leak