Quote:
Originally Posted by whitefrs
So your saying that fixing the boost leak and doing some datalogging will fix this
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you can modulate boost with your right foot. Even if the spring is at 7psi and you actually boost 8psi at WOT you can get say 3psi at part throttle.
If I were in your shoes,
1. I would check all of the charge pipe couplers, (not just visually)
2. pull the data logs from the gauge and see what boost you are hitting and what the afr was
3. setup the gauge so that it reads vacum/boost on the digital (cetner) and AFR on the ring
4. connect data logger, start engine, watch the fuel trims at idle.. if they are way positive then you still have a leak and it is bad enough to be a vacume leak not just a boost leak
If you hvae done the above and all seems well, (fuel trims look ok like +/- 5% at idle), drive the car easily and monitor ARF and boost. Slowly roll into light boost (1 or 2 psi) see where the AFR is, reapeat until you find the point where things are not good.
If it struggles to make boost and starts going very rich (in the 10's) before the boost gauge shows positive pressure then you have a big boot leak. If everything looks great right up until a specific boost level then it probably is boost limiter. If the boost cut is at say 8psi then you should be running perfectly right up to 8psi.
I'm NOT suggesting you drive the car, I think it would be best for you to get some help checking everything over first.