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Old Aug 14, 2007 | 12:33 AM
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Default lg pro header question
Will the 2001-2004 LG PRO headers fit my 1999 FRC? I assume the only difference is the air tubes versus the 1997-2000 set. I am running block off plates on my TPIS headers now. My air pump is turned off. Also how much RWHP do the high flow cats take away?
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Old Aug 14, 2007 | 12:50 AM
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From: American Canyon Lethal Injection
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Originally Posted by STLBLUES
Will the 2001-2004 LG PRO headers fit my 1999 FRC? I assume the only difference is the air tubes versus the 1997-2000 set. I am running block off plates on my TPIS headers now. My air pump is turned off. Also how much RWHP do the high flow cats take away?
Thanks
They should fit w/o a problem you have the block offs for the air pump..hi-flo cats will add RWHP.
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Old Aug 14, 2007 | 01:04 AM
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Originally Posted by SleeperC5
They should fit w/o a problem you have the block offs for the air pump..hi-flo cats will add RWHP.
Yes high flow cats add hp versus stock cats but how much rwhp will I get if I leave off the random tech high flow cats on the LG PRO system?
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Old Aug 14, 2007 | 05:13 PM
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From: American Canyon Lethal Injection
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Originally Posted by STLBLUES
Yes high flow cats add hp versus stock cats but how much rwhp will I get if I leave off the random tech high flow cats on the LG PRO system?
This was your question "Also how much RWHP do the high flow cats take away?"
Hi-Flo cats don't take away any RWHP..you gain RWHP...not sure how much from brand to brand of hi-flo cats...some say 5RWHP with hi-flo cats and some say 10RWHP with them 0ver OEM cats.
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Old Aug 14, 2007 | 05:17 PM
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Originally Posted by SleeperC5
This was your question "Also how much RWHP do the high flow cats take away?"
Hi-Flo cats don't take away any RWHP..you gain RWHP...not sure how much from brand to brand of hi-flo cats...some say 5RWHP with hi-flo cats and some say 10RWHP with them 0ver OEM cats.
Did you mean, How much HP do you lose in comparison to not running cats?

I was told that Random Tech vs. No cats is only a differnce of like 3-5 hp on the Dyno. - Not sure how accurate this is, but it is what I was told.
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Old Aug 14, 2007 | 10:49 PM
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yes, AIR tube and dipstick swap for later versions
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Old Aug 14, 2007 | 10:50 PM
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Originally Posted by thesaad
Did you mean, How much HP do you lose in comparison to not running cats?

I was told that Random Tech vs. No cats is only a differnce of like 3-5 hp on the Dyno. - Not sure how accurate this is, but it is what I was told.
Yes thats what I was trying to get across. Thanks guys for the info.
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Old Aug 15, 2007 | 09:17 AM
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Originally Posted by STLBLUES
Yes thats what I was trying to get across. Thanks guys for the info.
I was told awhile back by some one who use to work for random tech,you may loose a few hp running a hi flo cat compared to no cats,but make up for it in torque
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