LT1-LT4 Modifications 1993-97 Gen II Small Block V8

EGR plates... do I NEED them??

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Old Jan 21, 2005 | 03:33 PM
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Default EGR plates... do I NEED them??

just like the title reads...... do I NEED to put the EGR plates on?????? Have LT's with no emssions crap, and was wondering if it needs to have them..... If not what will happen..... HP loss,????? THNX
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Old Jan 21, 2005 | 04:12 PM
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If you removed your EGR system you will have massive vacuum leaks if you don't block the holes. So, yes, you need block off plates.
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Old Jan 21, 2005 | 04:41 PM
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The whole EGR system is still in the car, but it was deleted from the computer via LT1 edit...... I use the hawk as a daily driver, and it has been without the block off plate since i put the LTs in about 6 months ago......

So am i losing HP b/c of this..... or not really?????
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Old Jan 21, 2005 | 04:57 PM
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If the EGR port in the back of the intake manifold is open you are sucking in a ton of air that isn't metered. You'll run lean and then computer will dump a ton of fuel to try and compensate for the lean condition.
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Old Jan 21, 2005 | 05:07 PM
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I recently removed all the egr stuff from my engine except for the piece in the back since its not hurting to leave it hooked up. I dont see any difference in the way the car runs, just the 'service engine soon' lamp since I disconnected and removed the airpump from the front of the engine. I mainly did it for looks and to make a little more space. Umm... I'm not the expert but, as long as you plug whatever holes you leave and vacuum lines it should be alright.
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Old Jan 21, 2005 | 05:13 PM
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well i got my car dynoed not too long ago, and Mike from G Force told me that my car was rich as hell..... when they let off the dyno pull, fire came out of the exhaust tips...and there was a big dip in the curve due to needing to be tuned...
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Old Jan 21, 2005 | 09:09 PM
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Originally Posted by FIREHAWK #07
well i got my car dynoed not too long ago, and Mike from G Force told me that my car was rich as hell..... when they let off the dyno pull, fire came out of the exhaust tips...and there was a big dip in the curve due to needing to be tuned...
Hmmm that makes me curious....I have pretty much the exact mods u do (a few more goodies) And i was thinking about getting a wideband 02 (i have a autometer A/F gauge now but its junk and doesn't tell me anything) I Heard that tuner cat is comming out with its obd2 version for lt1 cars very soon, so we will see.
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Old Jan 22, 2005 | 02:02 AM
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Originally Posted by FIREHAWK #07
well i got my car dynoed not too long ago, and Mike from G Force told me that my car was rich as hell..... when they let off the dyno pull, fire came out of the exhaust tips...and there was a big dip in the curve due to needing to be tuned...

Fast and The Furious style, nice
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Old Jan 22, 2005 | 02:04 AM
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haha
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Old Jan 22, 2005 | 04:03 PM
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