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Limits of the maggie?

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Old 01-28-2008, 06:59 AM
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Originally Posted by stock48
Im running stock plugs gapped at .035'' with no mussfire @ 15PSI. With the stock gap I started getting missfire around 10psi. I would say if youre running 6+psi boost, and or N20 a gap over .035-.040'' would most likely be a problem regardless of the plug. You have to watch some of those plugs, they can be .060'' out of the box.
If the engine was mis-firing, wouldn't that be easy to spot? As far as I could tell, it seemed smooth and strong under boosted conditions. Just not strong enough.
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Old 01-28-2008, 07:14 AM
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Originally Posted by BlownChevy
your er than me.
yeah but I look better naked.

Originally Posted by old motorhead
If the engine was mis-firing, wouldn't that be easy to spot? As far as I could tell, it seemed smooth and strong under boosted conditions. Just not strong enough.
Allen just likes his dynos to give low #'s so you kick *** at the strip.
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Old 01-28-2008, 01:13 PM
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Originally Posted by old motorhead
If the engine was mis-firing, wouldn't that be easy to spot? As far as I could tell, it seemed smooth and strong under boosted conditions. Just not strong enough.
No not allways, usually it just hits a wall, unless it's really bad. It's not the power numbers being low that worry me. All dynos read different, some just read lower than others. But the low gain with the n20 dosen't sound right.
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Old 01-28-2008, 01:18 PM
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Originally Posted by stock48
It's not the power numbers being low that worry me. All dynos read different, some just read lower than others. But the low gain with the n20 dosen't sound right.
+1
Dyno is a good tool for measuring gains or losses with mods, that's all they're great for.
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Old 01-28-2008, 05:22 PM
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I'm going to tap a vacuum guage into the tube between the MAF and the throttle body and see if there is any restriction there. Also considering a tap with pressure guage into the exhaust pipe between the headers and the mufflers. Any one ever done this? I wonder how much pressure on the exhaust side is too much.
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Old 01-28-2008, 05:25 PM
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you guys can call it the dyno all day long and i would agree other than the 75shot giving only 15hp.
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Old 01-28-2008, 05:48 PM
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[QUOTE=parish8;3836156]you guys can call it the dyno all day long and i would agree other than the 75shot giving only 15hp.[/QUO

I just have to dig in and start on one end of the motor and eliminate choke points then proceed to the other end. I'll also pull the plugs and check gap and maybe put the stockers back in. I'm taking the nitrous bottles back to the guy that filled them to check pressures.
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Old 01-28-2008, 06:54 PM
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Originally Posted by old motorhead
...Also considering a tap with pressure guage into the exhaust pipe between the headers and the mufflers. Any one ever done this? I wonder how much pressure on the exhaust side is too much.
Yeah, me too. What kind of numbers are we looking for?
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Old 01-28-2008, 07:06 PM
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Originally Posted by parish8
you guys can call it the dyno all day long and i would agree other than the 75shot giving only 15hp.
yeah back to a good point again.
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Old 01-28-2008, 08:52 PM
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hmm, well if you dont have a presure gauge on your nitrous then you dont know what you are spraying. everything might be good other than your bottle presure.
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