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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 03-06-2006, 03:00 PM   #11
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That'* good news. Keep in mind I put alot of miles on my Jet with good weather before it fully settled in. And the intake took longer to learn because it had already learned the flow of the stock airbox.

Keep us posted, Matt. Both the good and the bad.
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Old 03-06-2006, 03:04 PM   #12
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Absolutely....things are looking up, got my hopes up for sure..
still a bit of tinkering to do im sure..but alot closer now
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Old 03-06-2006, 03:13 PM   #13
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I'm watching like a hawk. Primary concern at this point is how your car reacts to the LIM porting. It'* apparent now that the Jet PCM may have been the key.

We're doing the other side of the equation (Ported polished Gen2 supercharger) on John'* car as the ONLY change soon. It'* kinda nice to break these ideas out seperately and evaluate them.

We're doing that Supercharger either at my place in April when we do Chadow'* rockers, or you, me, and John will do it at WCBF day 1. Should only take the 3 of us about an hour or two. I will not predict the beer count for that mod.
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Old 03-06-2006, 03:14 PM   #14
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mmmm beer..umm, ill buy the first 30..from there..Pmom is gunna have to be the beer runner, or someone who isnt drunkish..
Can't wait
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Old 03-06-2006, 08:33 PM   #15
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Did you ever do the boost solenoid mod? I have been reading at the tuner site and came across some good info but cant back it up just yet.
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Well we discovered why (at least in all the cases that I speak of above) we were so often getting "flash KR". "Flash KR" is where you are driving along and want some acceleration, so you step on it. My car would hit the roof with KR because of this. With the combination of a 3.25 pulley and the boost mod with the plunger all the way down, what was happening was that I was introducing boost almost instantaneously... so fast, that the engine did not have time to introduce the proper amount of fuel to compensate. The result? A nice lean condition that also resulted in some nasty KR as the engine fought to to keep from punching a hole in my pistons.
The cure to try above is to raise the boost solenoid about halfway, this was only discovered on high boost motors of 3.3" or smaller and I was thinking of your extra boost when I read it?
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Old 03-06-2006, 08:43 PM   #16
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Mine does that sometimes.
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Old 03-06-2006, 08:57 PM   #17
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Yeah im going to back mine off a bit more here to be on the safe side, it gets into boost really fast..
Good point.
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Old 03-06-2006, 09:02 PM   #18
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Quote:
Originally Posted by SSEimatt93
Yeah im going to back mine off a bit more here to be on the safe side, it gets into boost really fast..
Good point.
The point here is that you dont loose any boost you just delay it a bit before your into it, the scans above show the fuel system trying to catch up which it does but the flash kr spoils any gains and is very hard on the motor.
Most that backed off the boost valve also got an increase in mileage?
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Old 03-06-2006, 11:26 PM   #19
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Matt, set that sucker all the way the OTHER way. Let'* see what happens. We have time. I can do the same tomorrow night.
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Old 03-08-2006, 03:02 AM   #20
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I have always kept mine about 1/2 way. It seems to be a good compromise.
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