I just bought my S4 and was thinking about upgrading the diverter valves. Are the stock ones made by forge? If not I guess the previous owner upgraded them already. Sorry if I seem stupid. The whole audi thing is all new to me. Thanks for any input

 

forge is an aftermarket place for dv's.

 

Yeah the stock ones are Bosch as is a lot of the stuff on the car
The stock DV's are very prone to rupture and the Forge upgrade is a good
replacement. Once u do it the car will be a tad more smoother to drive, not as jerky if its a manual
- at least thats what i found
Cheers

 

are the Bailey dirver valves any good ?

http://awe-tuning.com/pages/shared/p...IL=BaileyValve

 

Yes, i think that if AWE recommend them it should be good. There is a comparison
test between Forge & Bosch + 710 & Bosch at:
http://www.s4biturbo.com/
Personaly i've got Forge and they work great, you will be good to save some
money for something else ! Great found, hope you will continu to find such
nice upgrades on your car !

 

both bailey and forge are good dvs. you don't need to replace the dvs unless there is a leak in the boost. IMO, i would say that you should spend your money on something else. you don't need an upgrade for something that's already upgraded.

 

Thanks for all the info. Thats good to know I dont need to spend 350 bucks there.