colsoop Posted May 14, 2008 Share Posted May 14, 2008 (edited) for those with an aftermarket exhaust + decats who then then fit a baffle to reduce noise for track days i assume it reduces the boost too ? My question is this could you use the baffle as a substitute for a restrictor ring thus reducing the noise but keeping the boost in check ? Edited May 14, 2008 by colsoop (see edit history) Link to comment Share on other sites More sharing options...
jamesmark Posted May 14, 2008 Share Posted May 14, 2008 Not exactly a Supra but I fitted the baffle to my Apexi exhaust on my S14a and it created a shed load of back pressure, it sapped the noise but also sapped the power it did not boost well. Link to comment Share on other sites More sharing options...
SUPRASUZUKI Posted May 14, 2008 Share Posted May 14, 2008 http://www.mkivsupra.net/vbb/showthread.php?t=142405&highlight=baffle I think it would work and asked the same question a while ago. Link to comment Share on other sites More sharing options...
Ark Posted May 14, 2008 Share Posted May 14, 2008 Mine doesn't seem to limit boost, but it does reduce power Link to comment Share on other sites More sharing options...
colsoop Posted May 14, 2008 Author Share Posted May 14, 2008 Not exactly a Supra but I fitted the baffle to my Apexi exhaust on my S14a and it created a shed load of back pressure, it sapped the noise but also sapped the power it did not boost well. Any idea what diameter the baffle is ? http://www.mkivsupra.net/vbb/showthread.php?t=142405&highlight=baffle I think it would work and asked the same question a while ago. oops i completely forgot to search As you said in your thread, better to limit the power but be able to do a track day in anger Mine doesn't seem to limit boost, but it does reduce power How does that work Link to comment Share on other sites More sharing options...
jamesmark Posted May 14, 2008 Share Posted May 14, 2008 Any idea what diameter the baffle is ? The lip of the exhaust is 115mm, and an estimate guess that the hole in the baffle was appx maybe 2 inch. Link to comment Share on other sites More sharing options...
michael Posted May 14, 2008 Share Posted May 14, 2008 As you said in your thread, better to limit the power but be able to do a track day in anger Just keep an eye on the EGTs Link to comment Share on other sites More sharing options...
jamesmark Posted May 14, 2008 Share Posted May 14, 2008 Mine doesn't seem to limit boost, but it does reduce power How does that work It was the same for me, it sapped the car totally. Could still boost the car to it's limit but it took more effort to do so. Also on from Michaels post EGT's and was also warned about blowing gaskets/joins in the exhaust too. Link to comment Share on other sites More sharing options...
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