sup guys/gals, im looking to give up my beloved MR2 for a A4 1.8t. with more seaching here im hope to have it going faster than my MR2. i brought my MR2 up from nothing, so far ive done the suspension, rims, body kit, jdm turbo motor swap and much more little things. as it stands now im running 13.5's could def hit 13.3's if i push it with more boost. mods include track straight pipe, water/alcohol injection, intake, stock turbo and motor. 225 hp/236 torque

now my 1st questions about the A4 1.8t is what year is the best option? i hear the 2000+ models have an up'ed hp of 170hp. has anybody attempted an S4 motor swap? what is the stock boost on the 1.8t? how much boost is the turbo/motor capable of handeling? more questions to come...........

 

Hi OUT_T_1.8, welcome to the forums.

The 2001 and newer 1.8T A4's have the 170 hp engine. Many people have thrown around the idea of the S4 motor swap, but by the time you are done, you have already invested more than buying an S. Max boost is right around 20.

 

is the stock turbo still efficent at 20psi?

 

Why wouln't it be? the more boost the more HP.

 

because after a certain point the turbo loses it efficency and just blows out hot air and a turbo is only built to handle so much pressure.

 

Well the top level of boost people typically run is 22 I believe. After that you run the risk of blowing your car up.

 

on the turbo thing the stock turbo blows good till about 18 psi

 

what is the stock boost?

 

Ehh around 8psi