[s-cars] "Negative Boost", Oh yes Martha its that dreaded subject once again

[Joe Pizzimenti]

Have you tried a K&N?

Or chicken wire, for that matter?  :)

On Mon, Oct 4, 2010 at 9:30 PM, Hap Maguire <captmagu at gmail.com> wrote:

> S-Heads
>
> A sporadic boost issue has been driving Tufty Jones, Brendan Rudak and
> yours truly very crazy for the last several months. Last week Brendan and I
> set about logging runs on da computer to see if there was a software issue
> and everything checked out perfectly. We even tried swapping out the Tial
> 44mm wastegate for a plug and play Turbosmart WG with a minor change
> invloving a slightly laggier but still inconsistent boost between 10-15 lbs
> due to a 7 lb vs 1 bar spring in the Turbosmart WG. Tufty and I finally
> decided to do an intake tract leak check even though we knew it couldn't be
> that as this car has basically a full hard pipe tract with the only silicon
> pieces at the joints for engine flex. This would also eliminate the BOV as a
> potential source. Well as the pressure built upwards of 30 lbs the only leak
> we found was from the test valve. The intake was solid. To do the test
> though, we had to remove the 4" elbow that runs from the air cleaner to the
> turbo inlet. As Tufty was scratching his head yet again he took a good look
> at the cleaner and Voila, we had found our "Negative Boostie".
>
> As you can see from this inside view, the plastic frame has broken down.
> This allowed the cleaner to shrink in on itself as Da BEEG Comp turbo
> literally sucked the life from its veins. You can also see the crease lines
> on the outside of the cleaner and visualize what was going on.
>
> http://i935.photobucket.com/albums/ad199/hapster47/a-1-3.jpg
>
> http://i935.photobucket.com/albums/ad199/hapster47/a-3-1.jpg
>
> This air cleaner was mounted to a 4" aluminum pipe that had a 90 degree
> bend and the cleaner just hung from the pipe without touching anything else.
> You can just see the pipe here in this shot.
>
> http://i935.photobucket.com/albums/ad199/hapster47/dm-63.jpg
>
> Well mucho thanks to Tufty and Brendan for their continuing help in
> perfecting this beast. Something tells me this is gonna be a long story.
> Throughout this all, the car still ran beautifully if somewhat muffled
> because of the cleaner. I gotta see if I can get a refund or do you think
> AEM will just laugh???
>
> Hap, wit dakine "Negative Boost" nomoh not(and yes Mr Baloney that's 3
> negatives) from Evahboost, Maguire
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