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View Full Version : Pierburg valve life....


aforalfa
23-01-09, 20:37
Just chipped the turbo, goes great upto 5K revs, but runs out of puff right there, or sometimes before, but if i come off the throttle, and back on again at the 5Krevs, it'll give a load more boost and get going again. Could this be pierburg problem? tis only little, and is 22 years old, same as the car.
wrinx
23-01-09, 23:43
One way to check is to cut the PV out of the loop by joining the vacuum pipes together, then go for a run.

But, be careful as you'll have no restriction on the boost, but it will allow you to check your theory...although after 22 years you may have a point!

wrinx
aforalfa
27-01-09, 20:18
dont worry, sorted it!

AFM needed adjusting, had same issue as running a 24v with a 155v6 injection system. Now she flies!! i want to put her up against a q4 and see how i do!
wrinx
27-01-09, 21:15
...only if we choose which Q4 :smoke::eek:

wrinx