Catalytic Converter & HP - Pontiac GTO Forum
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post #1 of 10 (permalink) Old 02-03-2006, 10:58 AM Thread Starter
 
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Catalytic Converter & HP

Does anyone know what the HP gain is by removing the catalytic converters. . . . . and hight flow cats vs. standard.
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post #2 of 10 (permalink) Old 02-03-2006, 11:16 AM
 
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Originally Posted by Loubo
Does anyone know what the HP gain is by removing the catalytic converters. . . . . and hight flow cats vs. standard.
High flow -vs- standard is around 10-12 rwhp, standard -vs- none is around 15-18rwhp.
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post #3 of 10 (permalink) Old 02-03-2006, 11:27 AM
430.2 rwhp, 395.4 rwtq
 
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I might be crazy, but 15 - 18 rwhp thats the same if not more than LT headers. I dont think so.
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post #4 of 10 (permalink) Old 02-03-2006, 11:54 AM
 
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Originally Posted by wildchildm39
I might be crazy, but 15 - 18 rwhp thats the same if not more than LT headers. I dont think so.
Uh, nope...... they are more restricive than you think, and I forgot to add that's with a tune (check engine light will come on) which helps as well.
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post #5 of 10 (permalink) Old 02-03-2006, 06:01 PM Thread Starter
 
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Thanks GTODEALER
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post #6 of 10 (permalink) Old 02-09-2006, 02:44 PM
 
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Get Random Technology high flow cats, no CEL and but dyno approved for top end and mid range .

I had them before I went with my SSW headers and cats w/ 3"..................




http://dezod.com/pd_random_technolog...nvertergto.cfm
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post #7 of 10 (permalink) Old 02-09-2006, 11:51 PM
 
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Quote:
Originally Posted by GTODEALER
Uh, nope...... they are more restricive than you think, and I forgot to add that's with a tune (check engine light will come on) which helps as well.
Do you recommend adding a mil eliminator if I remove my cats? Providing I don't get a tune right away.
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post #8 of 10 (permalink) Old 02-10-2006, 10:12 AM
 
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Do you recommend adding a mil eliminator if I remove my cats? Providing I don't get a tune right away.
Yes.
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post #9 of 10 (permalink) Old 02-10-2006, 03:59 PM
 
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Thanks BuffGTO!
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post #10 of 10 (permalink) Old 02-13-2006, 04:23 PM
 
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No prob!
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