silverboy

Just wanted to check if anyone tried to install race headers with no cats.

How was it? Did you lose low end but gained top end?

In my side of the woods I don't need cats.

Thanks!

TRAKCAR

After warranty my neighbors are moving.

mdrums

Ah come on Trakcar...I love it loud!...LOL.....I see everyone on these forums are so concerned about their neighbors....as for me....I play my drums, and my home theater will shake the mailbox.

TRAKCAR

There's going to be some nice cheap houses for sale for deaf people..

silverboy

LOL

TTurbine

My GT2 is running this setup ,

The sound is awsome , No drone whatsoever , slightly louder than stock at idle , cruising speeds the sound is like stock, then when it hits full bost it screams like its out of this world...

It is even louder than a cup car on my home tracks straight!!!

silverboy

TTurbine - did you decat? If so, how long were the spacers you used for the 02 sensors? 5"? L shaped?

aussie jimmy

if your gt2 were n/a, it would be twice as loud.
exhausts like this are great for some fun, but they grow old on your
ears pretty quickly, especially if you suffer from tinnitus ( if you don't, you soon will)

TTurbine

I ordered the straight pipes "Test pipes" from car graphic along with an upgraded ECU.

Evreything else was un touched and left stock..

mdrums

Turbo's are much quieter than a natural aspirated car with straight thru exhaust.

luiscarlos

I have RSR headers and no cats,sound is insane very nice.
Everything is ok after the cold start air pumps turn off.

ron_dargenio

I tried muffler bypasses on my 6 GT3. A friend had them on a C4S and sounded great but with the high compression on GT cars, noise is much more obnoxious. Also made the car hard to drive normally in traffic, in town, near a cop, etc.

sharkster

Interesting conversation and I can tell you this... you need to manipulate what the ECU is calling/looking for. Not easy nor is it always possible to do. It's reading the back pressure/heat values at the 02 and when you change/move etc.. the heat ranges do as well. The engine is tuned for a certain back pressure so you not only need to find the correct tables but then try to manipulate the heat ranges/values... You will loose TQ/hp and it'll run in a safe-like mode because of the big change in back pressure And it'll be bloody loud...

luiscarlos

The cars runs great but to make a fine tune it is possible to log and send the data to you to analyze ?

sharkster

Absolutely it can help to have logs etc... But are you running without cats?