Do I need to insulate my aftermarket downpipe?

[2004F250XLT]

My stock 3in downpipe was nicely insulated but for the past 6 months i have been running diamond eye turbo back exhaust, with a 3.5 inch downpipe. I dont have anything wrapped around it. is it creating excessive heat around that area? I dont tow, but ill rip on the truck every now and then

[windrunner408]

I have had a 4in down pipe for four years now and it is uninsulated and has been just fine. I think you are fine.

[rfishoutofwater]

My factory one was not insulated and neither is my new diamond eye


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[Chanzfx4]

Does removing the insulation on the stock increase Turbo sound? Also have y'all seen any improvement with an aftermarket one?

[TooMuch03]

Well, you will have no issue with there being too much heat. That stuff on the firewall that makes you all itchy if your rub against it does a good job of keeping the heat int he engine bay. I have my up-pipes and down pipe wrapped beacuse I believe it helps with spool up, becasue hotter gases will travel faster and at higher pressures. Does it make a difference? Idk, but race engines almost always have wrapped exhaust piping.

[ebusa]

Originally Posted by TooMuch03

Well, you will have no issue with there being too much heat. That stuff on the firewall that makes you all itchy if your rub against it does a good job of keeping the heat int he engine bay. I have my up-pipes and down pipe wrapped beacuse I believe it helps with spool up, becasue hotter gases will travel faster and at higher pressures. Does it make a difference? Idk, but race engines almost always have wrapped exhaust piping.

Must be the same idea with a turbo blanket?

[windrunner408]

Wrapping the down pipe for performance is stupid and a complete waste IMO. Now wrapping the up-pipes and using a turbo blanket I could see as possibly being beneficial but there is no need to wrap the down pipe for anything since the up-pipes are closer to whatever could be affected by heat and are hotter and arent wrapped all the time. JMO.

[GregsSD]

The 03's came with the wrapping on the downpipe to cut down on noise, not heat.

It's because of those dang whiney 03 turbos!!!

[JasonY]

Wrapping pre-turbo exhaust components long term is usually a bad idea. Its generally only done for thermal management to aid in keeping underhood temps down on non-oem parts. Generally race only.

Turbo blanket is also almost always for theremal management not performance in non OE performance applications.

Jason

[jerg_064]

Originally Posted by JasonY

Wrapping pre-turbo exhaust components long term is usually a bad idea. Its generally only done for thermal management to aid in keeping underhood temps down on non-oem parts. Generally race only.

It helps to burn holes through otherwise good components.