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FAST 90/90 combo opinions with G5X3, and AFR 205's

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Old 08-25-2005, 12:50 PM
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Default FAST 90/90 combo opinions with G5X3, and AFR 205's

I have the G5X3 cam, AFR205 heads (not installed yet), and full bolt ons, except for a pulley. I was wondering if it would be worth it to go with the FAST LSX 90/90 combo, over my LS6 intake/ported TB I currently have. Im wondering if the gains would justify the cost.

Also, I plan on milling the heads. Any potential problems with fitment there? May sound silly, but I just want to make sure.

And finally, would the LSX intake need to be port matched to mate up to the AFR 205's?

Thanks in advance for any insight you guys can give me.
Old 08-25-2005, 01:15 PM
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not sure what gains you would see, but I would go with the NW 90mm TB.
Old 08-25-2005, 01:23 PM
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Thanks for the input
Old 08-25-2005, 04:55 PM
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Get that intake ported...
Tony Mamo does a velocity ported LSX for his 205's
Old 08-25-2005, 05:16 PM
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I gained 28 rwhp with my Mamo ported FAST 90 over the LS6 intake and my ported TB. Expensive (extra $500) but worth it. My car is very mild and quiet for the power it makes.
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Old 08-25-2005, 08:48 PM
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Im not sure if I want to spend an extra ~$1700 for 28 more ponies at the wheels......

Intake ~$800+
Nick W TB ~$400+
Mamo Port ~%500 = most of my 12 bolt, or 9" rear...lol
Old 08-26-2005, 08:19 AM
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Originally Posted by Nittany_marine
Im not sure if I want to spend an extra ~$1700 for 28 more ponies at the wheels......

why would you say that?

when you paid about 2200$ for 30-50rwhp

its not 1700... more like 12-1400... thats what i paid for mine 1199$
Old 08-26-2005, 11:07 AM
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if you have the money id get it but i wouldnt get it ported.
Old 08-26-2005, 11:19 AM
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Originally Posted by 30th t/a
if you have the money id get it but i wouldnt get it ported.
If you know what you're doing, you can always port it yourself. Trust me, it's worth some power (6-10 additional rwhp if done right).
Old 08-26-2005, 12:07 PM
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Originally Posted by Patrick G
If you know what you're doing, you can always port it yourself. Trust me, it's worth some power (6-10 additional rwhp if done right).
Me and porting are two words that dont belong together....lol
Old 08-26-2005, 05:09 PM
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Originally Posted by Patrick G
If you know what you're doing, you can always port it yourself. Trust me, it's worth some power (6-10 additional rwhp if done right).
true but you are the only person i know of that gained that much rwhp with a ported lsx. before i installed mine, i did a search and found out most people werent porting them but still gaining 17-20rwhp.
Old 08-31-2005, 03:08 AM
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Im wondering if the cost justifys the gains....




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