onebadtls2002

:banghead:

I had my exhaust upgraded and now it is slower and vibrates. I thought that I needed to get some different mufflers but then I called FlowMaster and they said that I may have to reset my computer, and that Resonator tips could cure the interior noise. Any help would be greatly appreciated. The system is as follows: 2 1/4" pipe Y into 2 - no resonators - 2 1/4" all the way to the mufflers which are 60 series Delta flows then just a tip after that.

PLEASE HELP - should I leave my computer unplugged over night?????

AcuraTL99

iTrader: (5)

I'm pretty sure that when you have modded something (intake,exhaust,headers, etc.) you always have to reset your battery so it configures that there is more air flow. I dont how it works but many people said to reset the battery. I havent done it yet because my stock HU didnt come with a code. (Kinda sux)
But i just waiting until i get my 2003 6 cd changer.
Hope this helped you.

car_lost

i dont believe the computer has to be rest.

did u get a complete cat-back or just axle-back?

fsttyms1

just disconect the battery for 15 min then go drive the car for awhile to let the computer redo it self (beat on it a few times too). adding mufflers shouldnt have made it slower, or run rougher

vsop TL-S

What kind of exhaust is that? Sounds like something you put on an American car. I think your setup isn't right either. You should have used 2.5" piping all the way with a resonator and different mufflers. I dont' think Delta mufflers or flowmaster belong on a TL. Just my two cents.

edgalang

This is happening to me as well. I have Thermal R&D axlebacks & I had the muffler shop remove the first (the smaller of the two) resonators and replaced it with a straight pipe. Now the exhaust vibrates when I reach 2.25krpm under load. The key to the vibration is that you NEED a resonator after the cat (at least for our cars). Since you and I took the middle resonator off, we now get a vibration at certain RPMs. I'm almost positive that if you weld a resonator somewhere 2 feet after the cat, the vibration will go away. Now...as for the droning noise, that's completely different.

ArN 2000 TL

Flowmasters on the TL? I had them on my mustang, but would never put them on the TL....way to loud IMHO.

onebadtls2002

Sorry for the confusion

The setup is as follows:

Original Cat then then a Y-Pipe. After the y-pipe the 2.25 pipes run up to the 60 Series Delta Flow Flowmaster mufflers. At the end of the mufflers - I just have tips stainless 2.25 to 3 inch. Everything looks good but it is just weird. One feller told me that now that I have more flow that my loss in backpressure is causing my problems with power. I told him that a lot of owners (ya'll guys and gals) are running bigger pipes than this and that some mufflers are just a pipe and the flow isn't the issue. I am going to try it tonight to see what is up. The car also has a K&N and I noticed a big difference when I put that on - so maybe JUST MAYBE - the two together is causing mondo issues. I really hope this works.

On the resonator part - I called the shop and they still have my old resonator - the small one right after the CAT - and they are going to put it on tomorrow. The only problem is that the Y-pipe that I had installed is pretty close to the cat - I scooted it back towards the CAT to straighten out the exhaust - so it would flow better (actually all of the bends now are pretty straight - really smooth lookin). When I take it to the shop I will try to get some pics of it in the air. I will be taking it in the morning and I just had it there Friday.

The truly worst part is that the upgrade was supposed to improve performance !!!!!!!!!! Just tickin me off................

...

onebadtls2002

Does it have to be 2 feet - how about a couple of inches?

@cUr@-TL

get 2.25 to the y-pipe (with a resonator after the cat) and 2.5 from the Y to each muffler (magnaflows)

i have a 22" resonator and the sound is perfect, sounds like a small-block V8, and it's not too loud at all. no vibrations too. i didnt really notice any torque loss and HP definitly improved (really noticeable at high speeds).

it's the best setup you can have (at least for the TL-P) !


@cUr@-TL

car_lost

you should of just kept the stock exhaust and gotten axle-backs. exhaust is pretty much a worthless upgrade for the TL-S. all its good for is looks and sound... performance is negligble.

edgalang

Dunno...with fully customized exhausts...its pretty much a gamble since nothing is tuned. I've learned my lesson...from now on I'm buying pre-designed cat-backs (on future cars anyways...this one is already too late).