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Old 04-21-2007, 09:45 PM
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Originally Posted by unit213
TB bump stop mod is worthwile.
TB bypass is a waste of time and is worthless IMO.
It is worth about 1-3whp. I guess that is worthless kinda, but thats techincally SOMETHING for not much.
Old 04-21-2007, 09:47 PM
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take out backseats and tire/jack
Old 04-21-2007, 11:51 PM
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Originally Posted by subtlez28
Really, That is VERY hard to believe...
true... i read it in one of the GM high tech. the article where the Tech school got a 99 z28 i think and did some things to it and tested on the 1/4 mile and in the article they wrote that they meet up with another ls1 f-body owner who did it and claimed .3 gain.
Old 04-21-2007, 11:55 PM
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Originally Posted by unit213
TB bump stop mod is worthwile.
TB bypass is a waste of time and is worthless IMO.
everything adds up...
Old 04-22-2007, 07:41 AM
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Originally Posted by BLKWS.6
It is worth about 1-3whp.
Sorry, but no...it's not. Who told you that?
Old 04-22-2007, 11:26 AM
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Originally Posted by BLKWS.6
It is worth about 1-3whp.

I agree with Unit. It's worthless.

Anyway, how the hell can you measure a 1whp gain on the dyno? That's within the margin of error. You could make no changes at all and have back to back dynos that are off by 1-3hp.
Old 04-22-2007, 09:10 PM
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Originally Posted by RPM WS6
I agree with Unit. It's worthless.

Anyway, how the hell can you measure a 1whp gain on the dyno? That's within the margin of error. You could make no changes at all and have back to back dynos that are off by 1-3hp.
Exactly.

In "theory" the mod makes sense. Unfortunately, real world results
and theory aren't always in line.
Old 04-23-2007, 01:27 PM
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port t/b and maf, descreen maf, you're done
Old 04-26-2007, 08:42 PM
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Thanks for the tips everyone. I ended up and didn't take the Z because the SES light came on about a hour before I left. So instead I took my TBSS, and my ram both of which ran new personal best times in. The TBSS ran a 13.60@101.27
Video..http://s109.photobucket.com/albums/n...ent=TBSSvs.flv
And my truck ran a new best of 13.32@101.74 I also got to race a procharged silverado..
Video..http://www.youtube.com/watch?v=30uHJ_u_3gQ
The DA was anywhere from 1700-1900' so all in all not too bad.
What kind of times should I expect from the Z when I take it?? I'm thinking probaly high 13's at 101 or so..
Old 04-26-2007, 10:16 PM
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Originally Posted by greysteel_M6
port t/b and maf, descreen maf, you're done
Bad advice. Descreening the MAF is fine. Port it and you're asking for trouble.
Old 04-26-2007, 10:58 PM
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Originally Posted by Mikerace15
Take off your lid/maf and look at the throttle body blade while moving it to wot. On some cars the blade dosn't go to 100% wot because the bump stop is too high. If you cant get 100% wot get out the dremel and grind down the bump stop till you can.
The moving part that hits the throttle body bump stop...it's made of thin metal. Instead of grinding down the throttle body itself, just carefully bend the moving part that hits the stop...
Old 04-26-2007, 11:16 PM
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Originally Posted by Intragration
The moving part that hits the throttle body bump stop...it's made of thin metal. Instead of grinding down the throttle body itself, just carefully bend the moving part that hits the stop...
Ive been told to use some sort of scanning tool to moniter the throttle position sensor.It will throw codes if the volts are off just a bit.Just my .02
Old 04-27-2007, 12:54 AM
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best way to do for the bumps stop mod is take a file... that way slow and easy= no margin for error b/c if you take too much of... yes.. you'll set on your SES and WOT is shot2sh*t...
Old 04-27-2007, 11:51 AM
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Originally Posted by six_string_wiz
Cold air cutout
Tb bypass
Maf screen removal

this man know's what he's talking about!

EGR!




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