Hey I just thought I'd post this up and see if anyone else out there with a test pipe has had this problem ...

I installed a test pipe on my car about the middle of the summer and things were going great until a few weeks ago when I realized there was small "burning" on the bumper right above the exhaust tips. I worked really hard and washed it off, but some of it was still evident. Today I washed my car and when I was washing the rear bumper I noticed a small, thin layer of burning on almost all of the bumper. You can only see it if you look REALLY close and it's in the right light, but it still bothers me. It's really hard to wash off and is starting to bother me a lot more. I was just wondering if anyone out there could lend some assistance or advice.

Thanks!

 

Try Adhesive solvent. We use it on new/preowned cars that have next to impssible stains/marks. It smells like ass and you can probably light it on fire with hair dryer. As a matter of fact it smells just like lighter fluid. It's from Stinger automotive products.

 

Would a clay bar do anything?

 

Ive had good results from some elbow grease and a claybar.

 

I have the T1R 70mm exhaust & test pipe. I get a "browning" of the bumper near the exhaust outlet but no "burning". It usually comes off with a good car wash. I think a claybar would definitely fix your problem unless it is physically BURNT/MELTED.... If it's just surface stuff then a claybar should solve your problems.

 

is this problem common one s2ks that run test pipes?

 

Test pipes have the effect of letting the flame pass through all the way to the Exhaust. This is a reason that some exhausts are angled or curved just like J's Racing and Toda.

(I think so!)

 

No flame here

Browning of the bumper with a test pipe is fairly common I think. It's not really that big of a deal. Mine just turns a bit... tanned?? lol turns an off white, and as I mentioned it comes off with regular car washes.

 

Are "test pipes" legal?

 

Nope.