2.7Lturbo

thats why i weld a lip on boost pipes

rocktown61201

I hate to re-start this thread, but here goes...

I started to get the "whooshing" sound again earlier in t he week. I took the engine cover off to find the TBB a bit off again. I loosened, adjusted and retightened once again but this time with no luck.

It is not nearly as noticeable as the first instance, but I start to loose power once the car gets into the 3-4,000 RPM range again.

I'm going to take it completely off and try to re-fit it again tonight or tomorrow. Has anyone else had this issue with the TBB? I hate to even ask, but would a bi-pipe completely take this issue out of the equation? Having these issues is really taking the fun out of the APR tune that I got and I definately want the reliability and gas milage the car can get. Thanks in advance as always, you all are more than helpful.

RMsALFA

I recall the stock TBB to be a bit of a weak point in these cars, even when stock.

Your mileage may vary, but I've been running the APR programming with the bipipe for almost 75,000 miles and have never had any air leak issues besides the one with the self-caused intercooler hose popping off.

TheSilverBullet

When you replaced the TBB, did you use the original (old) clamps?

The original clamps have been known to cause/contribute to tears in the TBB, even the silicone ones.

Also, did any oil or grease get in between the TBB and throttle body itself? If so, the TBB could be slipping under pressure.

2.7Lturbo

get better clamps, again why i weld lips onto he pipes....

Ming 2.7T

when you take the TBB off, really bent the crap out of it, especially around the underside by the lip.

If APR BiPipe fits the car, I would get one.

rocktown61201

I think you guys may have nailed it...I called Avalon Motorsports today where I bought the Samco TBB. I asked if there were any complaints/failures lately or have any advice and they also suggested replacing the OEM clamp. They explained how the ID was the same, however the OD was different and sometimes the OEM clamp would not fit as tightly as need be. Since its raining buckets here in IL today, It looks like I will try to get this accomplished by the end of the weekend. As always, thanks for the great replies and I'll post back with a conclusion either way. I feel if I can get a week under normal driving without any issues I'll assume I should be good. I also got a new clamp for the sensor port on the TBB as well. Currently I see a zip tie...

2.7Lturbo

meh, i use zipties on the vaccum nipples on my DVs but yeah the onld clamps are bleh, get a good clamp you can bolt the mo fo down with . asl if you can take the throttlebody off, take it to a welder and have him weld four small lips on . (top bottom left right)

rocktown61201

Worked like a charm. I was finally able to dodge rain drops and snow (seriously) today for 10 minutes to replace the clamp. I could see how the new clamp's OD was able to be tightened further than the OEM one. Took it for a spirited test drive and all seems well. I'll check it in a few days and if its good for at least a week, I'll consider myself home free. The smaller clamp didn't fit so the zip tie it is! Thanks again al.

MCrouse

2.7LTurbo... Any chance you have picts. of where to weld those tabs.. I can weld and could add the tabs.. Mike