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Re: Walbro 255 into 91 9KT, kinda long
Posted by SteveW (more from SteveW) on Wed, 1 Jul 2009 12:16:55
In Reply to: Re: Walbro 255 into 91 9KT, kinda long, smokin9k, Wed, 24 Jun 2009 03:09:20
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It runs the 40's fine, maybe a tad fat at idle. You should see more peak boost than 18. If you have access to a Tech II you can see if it there is pre-detonation. There is also a way to hook a light to the knock sensor to check, do a search. Check the preload on the wastegate, if its stock you probably need a helper spring. If your fuel pump has been replaced with a generic (smaller) unit it could be holding you back. But most importantly, check with the software supplier for your unit.
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