I have an 01 s4 recently modded with an apr 93 octane chip. when i first had it installed, the car seems incredibly fast and would break the tires loose around turns now only weeks later it feels like it has less torque. Is it possible that I have a boost leak or is the car just that smooth that i have become used to it? any help for a new s4 owner would be appreciated

 

Could be a boost leak, does the car buck or break up at all under boost?

 

NO not really except when I let off the gas at high rpms but i hear this is somewhat common with apr chipped cars. I mean the car is still quick just with that low rpm grunt that i am used to. i think its time to invest in a boost gauge

 

I'd get a VAST boost leak tester, they are like $30 shipped to you and it will show you any leaks. Almost a needed part to have a B5 S4.

 

where do you get a Vast boost leak tester?

 

bump.. id also like to know where to get the vast boost leak tester

 

www.vastperformance.com