i have an 2014 audi s4 b8.5 i want to tune it and i read online the apr supercharge pulley upgrade adds over a 100 hp is this true ? and that i should by a supercharger cooling system but i don’t want to spend a 1,000 dollars on it

 

The stage 1 tune adds a fair amount of HP, the basic stage 2 tune requires the pulley and adds more low end torque.

My old B8 S4 had stage 1 tune, then stage 2 tune with single pulley. The stage 2 adds more low end torque (boost comes on sooner), very nice to drive.

Look at the Table for HP numbers (image below and link): https://www.goapr.com/products/ecu_u...30tfsi_q5.html

The stage 2 with double pulley adds even more power, if you have higher octane fuel (93 or higher). The ultracharger is another step up.

Are you already on stage 1 tune?

The cooling helps with repeated runs and in hot climiates.

 

I would consider IE as well. Good tune for a good price in your own home.

 

What is IE? Internet Explorer?

Some people have had good luck with EPL ECU/TCU tuning: https://www.facebook.com/EPLabs/