Need new exhaust
#47
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4.0 comes with 300 cell cats. You need to delete cats to keep up with Clarke on Hoosiers.
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#51
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Can't speak highly enough for Eddie and M&M. No cat/No mufflers only way to go
While not for my RS, Eddie contacted M&M and they had a custom center exit straight pipe system made for my Carerra Race car in under 2 1/2 weeks! Gratuitous video I took of my shop running it :d
http://www.vimeo.com/58030135
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http://www.vimeo.com/58030135
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#53
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Mike,
We did not, we can produce a long tube set of headers, with 100,200 cel cats or catless![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
I have catless and so does John. Great gains, sound is amazing, but louder.
With catless and 100 cel I would strongly recommend a re-tune of the ECU, well I recommend it anyway, just because how the car drives after, the laziness in low RPM is completely gone, and the car is a lot smoother.
It's by far the best mod I did to my car to date.
Here is the dyno sheet from before and after (same day) on John's car on a dynojet dyno, so numbers are real, you can't manipulate numbers on a dynojet. Remember that he had a Cup car exhaust and headers, before.
We did not, we can produce a long tube set of headers, with 100,200 cel cats or catless
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
I have catless and so does John. Great gains, sound is amazing, but louder.
With catless and 100 cel I would strongly recommend a re-tune of the ECU, well I recommend it anyway, just because how the car drives after, the laziness in low RPM is completely gone, and the car is a lot smoother.
It's by far the best mod I did to my car to date.
Here is the dyno sheet from before and after (same day) on John's car on a dynojet dyno, so numbers are real, you can't manipulate numbers on a dynojet. Remember that he had a Cup car exhaust and headers, before.
![](http://i248.photobucket.com/albums/gg165/M3EvoBR/John_cupgiac_vs_MM_Evomsit.jpg)
#55
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u guys have no sound limit
get eddies stuff
I'm bounded by 90 db. I can't even drive my vacuum cleaner
get eddies stuff
I'm bounded by 90 db. I can't even drive my vacuum cleaner
#56
#57
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let me put this way
STOCK exhaust with turn up will not pass Laguna
STOCK exhaust with turn up will not pass Laguna
#59
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they only run firing special days at 103 db
that's ahem.... 800-1000 dollars per day. that just trk fee
very little run time
or hey put on large pipe with two to four burns muff OUTSIDE the bumper. I mean big like if it fell off, u hit it, ur car would be DONE..
that's ahem.... 800-1000 dollars per day. that just trk fee
very little run time
or hey put on large pipe with two to four burns muff OUTSIDE the bumper. I mean big like if it fell off, u hit it, ur car would be DONE..