your best bet. Dont forget to touch up with black silicon , high adhesive one 
Tom's Diffuser Fitment Issues
Tom's Diffuser Fitment Issues
Hey guys,
this thread is mainly directed to those with ISS forged exhausts (qes or des); I have the qes.
I recently purchased a genuine tom's diffuser, but am experiencing fitment issues.
It cannot install with the pipes on the car. I assume that one must uninstall the iss exhaust (at least the axleback portion) to secure the tom's diffuser on, and then reinstall the exhaust.
my question, however, even if I do successfully install the diffuser w/o the exhaust on, when I attempt to reinstall the exhaust, will the pipes clear the opening?
and if the iss forged exhaust does clear the tom's diffuser, should any provisions be made to protect the integrity of the diffuser (such as padding the exhaust contact points on the diffuser with heat-resistant material?)
thanks guys.
this thread is mainly directed to those with ISS forged exhausts (qes or des); I have the qes.
I recently purchased a genuine tom's diffuser, but am experiencing fitment issues.
It cannot install with the pipes on the car. I assume that one must uninstall the iss exhaust (at least the axleback portion) to secure the tom's diffuser on, and then reinstall the exhaust.
my question, however, even if I do successfully install the diffuser w/o the exhaust on, when I attempt to reinstall the exhaust, will the pipes clear the opening?
and if the iss forged exhaust does clear the tom's diffuser, should any provisions be made to protect the integrity of the diffuser (such as padding the exhaust contact points on the diffuser with heat-resistant material?)
thanks guys.
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I had never heard that it needed to be modified to fit the exhaust tips. But from the pics it does look very close. But that doesn't mean you need to do anything. My understanding was that the exhaust tip area was the same size as the stock holes (which fit the ISS just fine...but again, is very close).
I can understand removing the axle-back portion to install the diffuser, but I say go for it and after a quick drive see if you see any rubbing or marks on the diffuser. Then figure out how to protect it. But the tips stick out far enough that you shouldn't have black marks...it's really just an issue of hot exhaust tips rubbing.
I can understand removing the axle-back portion to install the diffuser, but I say go for it and after a quick drive see if you see any rubbing or marks on the diffuser. Then figure out how to protect it. But the tips stick out far enough that you shouldn't have black marks...it's really just an issue of hot exhaust tips rubbing.
^^^The double walled tips are not really hot, it more of a matter of rubbing.
Here's the 4 page thread on it with more pictures, but very little installation info
https://www.clublexus.com/forums/is-...installed.html
Digger08
Here's the 4 page thread on it with more pictures, but very little installation info
https://www.clublexus.com/forums/is-...installed.html
Digger08
I had never heard that it needed to be modified to fit the exhaust tips. But from the pics it does look very close. But that doesn't mean you need to do anything. My understanding was that the exhaust tip area was the same size as the stock holes (which fit the ISS just fine...but again, is very close).
I can understand removing the axle-back portion to install the diffuser, but I say go for it and after a quick drive see if you see any rubbing or marks on the diffuser. Then figure out how to protect it. But the tips stick out far enough that you shouldn't have black marks...it's really just an issue of hot exhaust tips rubbing.
I can understand removing the axle-back portion to install the diffuser, but I say go for it and after a quick drive see if you see any rubbing or marks on the diffuser. Then figure out how to protect it. But the tips stick out far enough that you shouldn't have black marks...it's really just an issue of hot exhaust tips rubbing.
^^^The double walled tips are not really hot, it more of a matter of rubbing.
Here's the 4 page thread on it with more pictures, but very little installation info
https://www.clublexus.com/forums/is-...installed.html
Digger08
Here's the 4 page thread on it with more pictures, but very little installation info
https://www.clublexus.com/forums/is-...installed.html
Digger08
how did you proceed with the installation?
the tips touch the diffuser. i just lubed the tips and put the tip(s) in hahahaha i didnt modify the toms diffuser at all.
when i took my exhaust off, there were abrasion marks from the exhaust rubbing on the diffuser. it doesnt bother me.
hope this helps
when i took my exhaust off, there were abrasion marks from the exhaust rubbing on the diffuser. it doesnt bother me.
hope this helps
That third post is a pic on my car. It's not photoshopped but it is as you indicated. To install take the mufflers off and put the toms on. Then have someone help you reinstall the mufflers as you'll have to angle and then turn to get back into place and you don't want to dislodge the diffuser by pushing it back off. They will make contact with the toms but I've had it that way for over a year with many miles and no issues other than the spots it make contact but no heat issues. The rubbing isnt visible so it wasn't a concern to me. GL with your install.
Last edited by clifftrail; Feb 12, 2013 at 06:04 PM.
That third post is a pic on my car. It's not photoshopped but it is as you indicated. To install take the mufflers of and put the toms on. Then have someone help you reinstall the mufflers as you'll have to angle and then turn to get back into place. They will make contact with the toms but I've had it that way for over a year with many miles and no issues other than the spots it make contact. And that's not visible anyway so it wasn't a concern to me. GL with you install.
I will get this done March 8th, the date of my sikky header installation appointment (at JE)
