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Old 02-18-2010, 05:41 AM   #1
tee
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Default Rear bumper has turned yellowish!

Last week I took my car for a hard run to Terenganu and back two days later. I noticed my rear bumper is now a little yellowish from the exhaust heat. My car is Ivory white. I had decatted the exhaust system. Damm frust lah! Dunno what to do. If respray sure again will turn yellowish.

Any other members experienced this? I think the white cars are likeliest to have this problem.
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Old 02-19-2010, 02:10 AM   #2
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Hi Tee,

i always have tht on my white 34 everytime travelling long. Wht i do is to send to any car wash center and tell them to wash it off. They do have stronger agent to clean it up. And for my case it wasnt the heat, but the carbon stain. I'm sure you're just having the same
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Old 02-19-2010, 03:11 AM   #3
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Hi Tony,

I thought the same thing as was the case with my white Scoobie. But the car detailer (Carnauba at Glenmarie) could not get the stain off The blackish carbon got removed but the slightly yellow color across the entire bumper remained. I will try my favorite painter shop. They may have the proper chemical. Thanks!

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Old 02-19-2010, 03:23 AM   #4
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tee,

sorry to hear that. perhaps i was lucky to have lighter stain best of luck of getting rid of them ya!
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Old 02-19-2010, 05:00 AM   #5
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been a long time since i checked this forum! (busy these past week!)

Firstly, Welcome Tee!

With regards to your problem, all white cars have it!

Carbon stains + yellowish crap. ... what i've done is to put a black sticker (RM30 only) on top of the exhaust place on both sides.

I also did a Threebond Ultra Glass Coating NEO application on my car. Since installation, my rear bumper can be easily cleaned without using abraisive chemicals or wax/polish! (used to wax/polish the car once every 3 days!!)

I'd recommend the sticker for a start. If you're interested in doing the Glass Coating, PM me and I can sort you out!

It costs approx RM2.5-3k for a GTR. Warranty is 2 years.
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Old 02-19-2010, 05:37 AM   #6
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oh ya, forgot to tell you Azri. The RM30 black sticker makes your car looks "Lambo-ish" from the back
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Old 02-20-2010, 04:00 AM   #7
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Welcome to the forum

This is the cost of using decat on white car. You cant get away from it. Alternative is to use highflow catted Y pipe. Is your downpipe decat too?
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Old 02-21-2010, 11:22 PM   #8
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Quote:
Originally Posted by azriaziz View Post
been a long time since i checked this forum! (busy these past week!)

Firstly, Welcome Tee!

With regards to your problem, all white cars have it!

Carbon stains + yellowish crap. ... what i've done is to put a black sticker (RM30 only) on top of the exhaust place on both sides.

I also did a Threebond Ultra Glass Coating NEO application on my car. Since installation, my rear bumper can be easily cleaned without using abraisive chemicals or wax/polish! (used to wax/polish the car once every 3 days!!)

I'd recommend the sticker for a start. If you're interested in doing the Glass Coating, PM me and I can sort you out!

It costs approx RM2.5-3k for a GTR. Warranty is 2 years.
thank you Aziz. I will consiider the glass coating. Washing the car everyday is no fun!
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Old 02-21-2010, 11:27 PM   #9
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Quote:
Originally Posted by dkrm View Post
Welcome to the forum

This is the cost of using decat on white car. You cant get away from it. Alternative is to use highflow catted Y pipe. Is your downpipe decat too?
Thank you dkrm. Yes I have decated the downpipe too. I get a bit of flames from the exhaust when I accelerate hard to redline and when it changes to the next gear. Worth the yellowish bumper I guess. hahaha
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Old 02-22-2010, 10:59 AM   #10
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I read in other forum somewhere that if you use highflow catted downpipe and Y pipe you can reduce the smog without having to pay heavy hp penalty. I think the guy was using AMS downpipe.

I have NO personal experience using highflow catted downpipe, though
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Old 02-22-2010, 11:19 PM   #11
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will definitely check out the high flow cat replacement units. Thanks DKRM
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Old 03-24-2010, 04:38 PM   #12
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give your car a longer outer pipeS.^^
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Old 03-24-2010, 10:36 PM   #13
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Norman, I was thinking of painting the rear matt black! Solve the problem....
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Old 04-01-2010, 01:41 AM   #14
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but! you need well maintain for matt black too
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Old 04-01-2010, 11:57 PM   #15
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ya man... guess just leave it yellowish..
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Old 04-07-2010, 02:51 PM   #16
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even my silver become yellow now^^:
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Old 04-07-2010, 11:48 PM   #17
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Old 07-20-2010, 11:19 AM   #18
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Oh man i thought of getting a white GTR I should consider getting the gun metal or black colour now..
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Old 07-28-2010, 01:55 AM   #19
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Tee,

did i see you on PLUS highway heading to KL on Monday 3pm-ish?? Met a White GTR with real yellowish bumper though
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Old 08-16-2010, 03:05 AM   #20
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Wasn't me Tony. Was away in the States for a month. Just got back. I am guessing many white GTRs have yelowish rear bumpers! hahaha.
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Old 08-16-2010, 03:44 AM   #21
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Quote:
Originally Posted by tee View Post
Wasn't me Tony. Was away in the States for a month. Just got back. I am guessing many white GTRs have yelowish rear bumpers! hahaha.
Hi T, you can polish(not wax) back to 90percent to normal.
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Old 08-16-2010, 09:04 AM   #22
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Quote:
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Hi T, you can polish(not wax) back to 90percent to normal.
yes Norman you are rite. Been doing that so its not too bad now
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Old 08-16-2010, 03:45 PM   #23
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White always the best choice for track car, just need to take MORE care.
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Old 08-22-2010, 12:35 PM   #24
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my white become red... help me!
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Last edited by Norman; 08-22-2010 at 12:58 PM..
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Old 08-22-2010, 12:59 PM   #25
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Bro, you need to respay, it turned to badly...
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