hey guys i recently found out that my exhausts leaks at the flex thingy under the turbo so i've decided to get a new downpipe and a sports cat, and is a little curious  on whats the  best one for me

 

im thinking of these 2 models 

 

1. http://www.ebay.com/itm/Downpipe-Hosenrohr-76mm-1-8T-K03-A3-VW-Golf-4-Gti-Skoda-1-8T-RS-/141488995873?hash=item20f166be21

 

this one is 3" 76mm but dont have a sports cat so if i choose this one  i have to buy a 100cell or 200 cell sport cat and weld it on and make it to fit my car

 

2.http://www.tatechnix.de/tatechnix/gx/product_info.php/info/p10831_ta-technix-downpipe-with-catalyser-audi-a3-tt-seat-leon-toledo-ii-skoda-octavia-vw-bora-golf-iv-new-beetle.html

 

and then we have this model that has a 200cell cat and looks realy bolton but its only 3" at the opening and 2,5" pipes

 

if i choose the 2,5" one will i loose alot of power compared to the 3" one ?

 

after the exhaust change the car will probably be stage 2 mapped, unless i plug the civinco piggyback box back in the car

 

the car already has a 2,5" catback exhaust on  now, im aiming for around 240-245hp

 

with only the civinco piggyback its around 225hp and 338nm and about 1,25 bar boost

Edited 13 September, 201510 yr by rsdanne

 i found another one that should be good think i will go for this one

 

 http://www.ebay.com/itm/Downpipe-Hosenrohr-76mm-200-Zeller-KAT-1-8T-K03-Audi-A3-VW-Golf-IV-TT-Seat-Leon-/201005174218?hash=item2eccd78dca&vxp=mtr

Edited 14 September, 201510 yr by rsdanne