blakeh

The first mods I did to my car were to install an Abt chip and a Borla exhaust. The car felt VERY fast, but was a little "twitchy". It was surging under heavy load. So, I called the place where I bought my chip from and they told me that new bypass valves would smooth out the throttle response. Well, I've had them in for nearly two weeks now, and I feel like I'm nearly back to stock boost. The torque I feel is extremely linear, no "punch" to it all. And, a few times, I've gotten on the throttle in second gear, and the whole car bogs down & I have no boost at all.

Anyone with a similar experience? TIA.

-Blake

The R

Try the stock ECU and see if acts the same. If so, then it's the car and not the chip. Do you have a boost gauge? If not, see if you can get someone with a VAG to look at it. You could be making boost, but the car is retarding your timing. Eventually, get a boost gauge. It's easier to monitor boost performance than hooking up a VAG tool all the time.

Another Drew

I don't know how someone could tell you that new $300 bpvs would solve your problem without knowing if your old bpvs were bad.

I would thoroughly check the throttle body hose and the f-hose.

The R

And what exactly does it do?

LCP

What kind of bypass valves did you get?

blakeh

Forge MkII (The ones that were redesigned so there were no problems the original ones had)

Another Drew

Similar to a bad tbb.

Lehigh

Baileys