So, if I slap this greddy downpipe on, will it bolt right up with the stock cat back and still yield some gains??? Or will the stock cat back kill all gains???

i thought that they said that it would work with stock or aftermarket exhaust. as for the gains i have no idea

i thought that they said that it would work with stock or aftermarket exhaust. as for the gains i have no idea

I was gonna pick one up now and when speed circuits cat back comes out, I was gonna snag one of those to compliment it. I have a track day coming up and I wanted to let the car breath a little better.

absolutely. im still thinking about getting the ultimate racing downpipe. heard good things. let me know how that Greddy treats ya

^^^ i agree would like to know more about that greddy downpipe!!! please!!! :)

^^^ i agree would like to know more about that greddy downpipe!!! please!!! :)

Just compare the two, the greddy down pipe is farrrr more smooth = better exhaust flow.

GREDDY
http://www.jscspeed.com/part_pictures/gre_evox_dp_1.jpg


Ultimate
http://www.lancershop.com/product_image.php?imageid=1122

I think greddy wins. :p

is the greddy 80mm???

I had a VERY hard time finding that information.... some say its 70mm, some don't know... but if it WAS 70mm by chance... then i'd believe that Ultimate-racing > greddy.

If not, then its up in the air...

Looks like it's 70mm


http://www.outperformanceshop.com/product-p/grd-10139200.htm

i think it is

well that pretty much settles this thread, doesn't it? Glad I purchased the Ultimate racing one.... phew!

for the stock turbo actually the 3" pipe is not better. You might even will make less WTQ vs the 2.75".

Has anyone installed the Greddy down pipe as of now? I'm curious if it deletes the cat or not. Greddy's website mentions cat delete but it's not specific, and you cannot tell from the picture. Any insight is very helpful. Thanks in advance.

it does not delete the cat...

...and mine is still for sale ;)

Thanks for the info. Would you happen to have an actual picture of it? May I ask why you are selling it?

Is it the same down pipe referenced on Greddy's website? For some reason their description shows cat-delete.

http://greddy.com/products/exhausts/off-road-exhaust/?partnum=10139200

Anyone know what the downpipe and cat delete with stock exhaust makes the car sound like?

Sellin mine cuz i have an ams dp

Sorry for bringing that thread back but...
I'd like to know if this downpipe is fully compatible with
the OEM exhaust system. Will it fit the original turbocharger exhaust
outlet before it, and the catalytic converter after it?

Help :-)!

yes it bolts right up to the factory o2 housing and stock cat. the stock cat back exhaust section is connected to the cat on the other end

you should expect to see about 5hp and a lil more growl to your exhaust note (mildly)

Many thanks,
I'm going to purchase it...

Done...
There is the lambda attachment for the stock sensor, is the same also for other WB like UEGO and LC-1?I'm going to buy 1 of them, I've read a lot and seem to be equal more or less, I'm thinking for the UEGO...