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Regarding your concerns. Hello Gibby - Seems my post you quote has you spooked and frustrated . Let me ease your mind a bit. Regarding my posts. 2 things #1) Frankly, I post what I've experienced from truning wrenches on my cars. I found 1st hand some solutions simply did not...

Home made manifold IMHO..the manifold shown above would never produce uniform air flow. I would question whether you could even make it run consistently much less get performance out of it. Just my initial thoughts after 10 years trial and error. See...

How much boost?? See http://lextreme.com/forums/showthread.php?t=2028&page=2&pp=20

Lexus + $300 Not cheap?? Performance never is. I've been dickin with Lexus sc400's since 1992 Great engine.. nothing for perfomance you can buy. Fabrication is $$$$ Smartest thing I read here is when somebody said .. drive it first. Want a daily driver??? then beware of the screaming...

Best setup..here it is!! Here is my personal setup on my black SC400 in the background I am a little over your budget. Much more.. but here is breif on the top end of my 4.0 Port and polish heads - 3 months nights & weekends labor 3 angle valve job - precision surface grind heads &...

How much boost? UP to 15 lbs for short period of time without doing immediate major damage. Over 15 you will blow out the head gaskets. I run a supercharged version as a daily driver at 8 lbs. and have found I can run 12 lbs. daily . without any major issues or problems. Over 12 you are...

I am concerned that others will attempt to duplicate your results and end up spending time and money and only loosing power If you polish alone you cannot lose power. The gains were achieved without headers but after losing the stock muffler setup. Headers added only 8HP when added. Sharp or...

To rough.. will eventually accumulate carbon in the grit marks. Using 80 grit I'm suprised you even get that. This is not a problem when polished out properly as I have shown. The smoother the better. At no point can you be to smooth. Air slow is a funtion of minimizing resistance...

Port & polishing Lexus sc400 Polishing decreases resistance. The smoother the surface, the more minimal resistance becomes. Lowering or eliminating resistance will always increase your air flow. Dimples on the ball control trajectory, flight, spin rate, wind bore rate. A golf ball is...

Won't work for Lexus USA market. I'm glad to see people taking the steps to produce aftermarket perfomance for the Lexus engines, however, this mod. needs some work before it's ready. 1st = Without the EGR valve attached, it will not work. Intake shown would require ERG valve mod. to...