hillybilly
New member
I'm ready to pull the trigger on this system. Anyone have any problems with fumes due to the exhaust exiting underneath the way it does?... With top on or off?
Dynomax evolution competition exhaust
- Thread starter hillybilly
- Start date
MTG
Caught the Bug
Waiting for my Dynomax Evo to be delivered. Placed an order last week. Question, does anyone know if this mod is still required (trimming of the evap skid plate). Thanks...:thumb:
¥
I just installed mine last week. I did not do this trimming simply because I did not have the proper tools. However, I was still able to tighten it down. Other than it not being completely flush, it worked fine.
GCM 2
New member
No problems with fumes at all sitting or driving. I have the Dynomax Rockcrawler exhaust and it basically dumps right beneath the floor where my rear seat bolts are or maybe just below the passenger's feet on a four door. I think because most jeeps sit high enough, the exhaust has no trouble clearing out from below.
It's only been a week, but so far no problems with fumes.
WillMooseJaw
New member
No problems here either! I didn't do any trimming either and the system worked just fine.
BLK_Mamba_JKU
New member
Same here...had to trim the lip with the saw zaw to accommodate the hanger bracket to mount flush.
Instructions don't mention it, nice to know someone else had the same hiccup. It created doubt...b/c I might have been doing wrong.
Also, if possible, I would recommend bending the support bracket too, I didn't bend it, the fit is to tight between the bracket and clamp, had to trim the clamp too...because the bracket's weld impeded a good fit.
It's to tight, medal clamp touching medal bracket nub, it gone to be a problem of rattle and wear.
The design should allow it to hang by the rubber grommets.
BLK_Mamba_JKU
New member
hillybilly
New member
Thanks all! I appreciate all sharing their experience. Will place my order this afternoon.
aldaman
Member
I just received my Dynomax Evo exhaust today :clap2: but as I was reading the instructions, I noticed step #2 requires cutting of the intermediate pipe 2.5" before installation. For those of you that installed this exhaust in your '12-'13 JKU, did you cut that pipe as instructed? I didn't see that as a step on the forum write-up. Please advise, thanks :thumb:
WillMooseJaw
New member
It also says to cut 2-2.5" off of the end of the y pipe in the 07-11 JKU. I didn't do this which didn't matter as everything but the last hanger lined up perfectly. I got the last hanger to fit by leaving the bracket hanger that bolts onto the evap skid provided loose enough so that the isolator lined up, then I tightened down the bracket thus pulling the exhaust up making it a nice and tight fit. If I had cut the 2" off this fit would have been easier, but it fit without cutting it just fine. :yup:
Deuane
New member
I put it on a while ago, no issue with fumes, not if u sit or stand next to it or u will smell it.
I did not brother to take the sticker out when I install it, make sure u do that or it will get burnt, especially on the muffler it self it a clear sticker that u will not notice that goes around the muffler..
I did not brother to take the sticker out when I install it, make sure u do that or it will get burnt, especially on the muffler it self it a clear sticker that u will not notice that goes around the muffler..
BLK_Mamba_JKU
New member
Yes, I followed step two, cut 2.5 inch from intermediate pipe. No issues with that step. The cut is to shorten the intermediate pipe so the exhaust can fit between the two frame cross members. Not sure the correct technical term for them. Someone with correct me it I'm wrong.
MTG
Caught the Bug
Seemed to. Been on for a few thousand miles now. Just test fit it and see I'd it works.
