polish_pounder

iTrader: (8)

hey guys so i have a 2005 evo 8. my car is basically stock with a tbe and a few other small mods. i have a megan 02 and downpipe with an stm test pipe and ESpiller JGT500 Catback. my car always seems rough when shifting it would be rough not through the shift cable but in the throttle response. tonight i put my silencer on so i wouldn't wake my family and noticed tho it sounded like *** that it was a much smoother acceleration... is this just me being picky or have other people noticed similar things

DormantBeast

iTrader: (23)

hmmm haven't heard anyone else mention something like this... kinda curious as to this as well had a buddy mention the same thing but i thot he was just joking. lets see if someone else has some info on this.

Foxmaster

iTrader: (14)

Is your car tuned?

nikg

iTrader: (2)

sounds like you are just thinking it is running smoother because you cant hear the exhaust as well. I guess it could be possible that the extra backpressure is making it smoother?

Sim2k

iTrader: (5)

I have one of those removable silencers, when the cabin drone gets too much on long trips I pull over and shove it in. I can't honestly tell much difference in power, but there is a difference in sound and "feel". It's actually nice to hear the engine rather than the exhaust sometimes.

So I'm interested too, maybe an exhaust expert can chime in on this one ?

Kracka

iTrader: (49)

Sounds like you need a tune. The silencer is most likely adding back-pressure similar to what the stock exhaust does which, if you're untuned, is what the ECU is going to like.

Sim2k

iTrader: (5)

By the way, interesting reading..

https://www.evolutionm.net/forums/dy...cer-sucks.html

polish_pounder

iTrader: (8)

Yes I am untuned so a tune could help?

Kracka

iTrader: (49)

Definitely, honestly it's the best mod you can do!

polish_pounder

iTrader: (8)

yeah saving up for that but i have all this other stuff to buy and everyone is saying its useless to tune then get the stuff i need like FMIC, ICP, cams all that. just to do it all at once

Night479

Ya but you know that a lil back pressure is good, keeps everything flow steady

Foxmaster

iTrader: (14)

You might as well keep the silencer in if your untuned, then just wait for your other upgrades to tune.

polish_pounder

iTrader: (8)

it sounds like *** with the silencer tho haha and how can the tune create backpressure?

Night479

The tune will just allow the ecu to notice the changes u have made. It still thinks there's a stock exhaust on her.

polish_pounder

iTrader: (8)

yeah and i was getting a straight pipe made from the res back so only would have a resonator? is this a bad idea?