Car Exhaust Temperature

[Sailor]

Hi all,

 

I've recently installed a body-kit at the rear and unfortunately, the ABS body-kit at the exhaust muffler melted. Friends who had installed the same ABS rear body-kit did not suffer the same fate as me.

 

I'm trying to troubleshoot the cause and had googled but found no answer. The only recent modification made to my car are the 1) K&N Apollo Closed Air Intake System, 2) Throttle Controller, and 3) Oct 98 Fuel....... As such, any technical gurus here have any possible explaination if one of these mod. may have increased the exhaust temperature or could it be due to any other reason/s ??!!!

 

Thanks !

 

[Ooosh]

Yr driving habits might differ from your friend's. did you take to a workshop to check your cat but i doubt that is the problem. Did u retune your car? Or reflash? Remap etc?

[Sailor]

I did not retune nor reflash my ECU after installing the K&N Apollo Closed Air Intake.

 

I always have the idea that if the Air/Fuel Ratio is too lean, the Fault Code will appear. While I agree that if the mixture is too lean, the combustion temperature (and subsequently the exhaust temperature) will increase but I am not too sure how this K&N Apollo kit may be a culprit for the increase in Exhaust Temperature.

 

  On 2/21/2013 at 7:32 PM, Ooosh said:

Yr driving habits might differ from your friend's. did you take to a workshop to check your cat but i doubt that is the problem. Did u retune your car? Or reflash? Remap etc?

 

[Mllcg]

  On 2/21/2013 at 7:45 PM, Sailor said:

I did not retune nor reflash my ECU after installing the K&N Apollo Closed Air Intake.

 

I always have the idea that if the Air/Fuel Ratio is too lean, the Fault Code will appear. While I agree that if the mixture is too lean, the combustion temperature (and subsequently the exhaust temperature) will increase but I am not too sure how this K&N Apollo kit may be a culprit for the increase in Exhaust Temperature.

 

too rich may also cause backfire.. better get it checked

[Moadia]

Guarantee not any of your mods or air filter.. its likely due to your bodykit.. its either the paint job of the bodykit or the material.. I even change exhaust, air filter n bodykit and no such problems as yours

[5936]

At my work place, we monitor engine exhaust temperature as one of the critical engine performance parameters.Depending on engine type, condition and load, its easily around 400+ deg C.

With this type of high temperature, plastics will surely melt.

[Fuelsaver]

  On 2/22/2013 at 3:34 PM, 5936 said:

At my work place, we monitor engine exhaust temperature as one of the critical engine performance parameters.Depending on engine type, condition and load, its easily around 400+ deg C.

With this type of high temperature, plastics will surely melt.

But at outlet, how can be 400 still? Maybe cooled down to 100 thereabout?

[Sailor]

Thanks Moadia...... I'd like to think that it's not due to the K&N Apollo but that's probably the only mod I've done so far and friends with similar bodykit (and ABS material) did not melt..... except mine.

 

By the way, did you get your ECU re-tune to optimize the Air Fuel Ratio since the air-filter brings in more air now ?

 

  On 2/22/2013 at 12:42 AM, Moadia said:

Guarantee not any of your mods or air filter.. its likely due to your bodykit.. its either the paint job of the bodykit or the material.. I even change exhaust, air filter n bodykit and no such problems as yours

 

[5936]

I am refering to exhaust outlet temp, not to confuse with tail pipe temp.

[Moadia]

Sorie for d timely reply.. ya cos what I see is that aftermarket air filter/exhaust provides higher volume of air thus yr ignition n fuel must be adjusted to d changes.. by Re-Tuning yr ECU it definitely increase yr FC n peformance coz everything will b balanced

[Moadia]

Btw how's yr bodykit? Checked d material or paint job? Wat was d prob?

[Fuelsaver]

  On 2/24/2013 at 4:32 AM, 5936 said:

I am refering to exhaust outlet temp, not to confuse with tail pipe temp.

Cos u mentioned plastic sure melt, so I thot was tail pipe area. U mean engine side has plastic?

[Fennmax]

My exhaust sure hotter than yours. But my rear diffuser made of fiber did not melt

most likely due to enough clearance. Plastic cannot withstand high heat.

[Gasguzzler]

Agree not enough clearance. Exhaust tip needs to be flushed with the bodykit.

 

Plus maybe you drive longer hours than your friends with similar bodykit.

 

Also could be poor quality of material.

[Sailor]

Managed to finally get it replaced with another brand new ABS plastic body-kit and after 30 mins of driving off from the workshop, it MELTED AGAIN !!! :angry: