Quote:
Originally Posted by AE101Jun
Thanks guys! Greytop it is then, also how would I adapt my 4AGE's ITB's to the BEAMS without having to change ECU (BEAMS are they AFM or MAP sensor or doesn't matter?), worst case, I might just have to finish off my MS-1 ECU and run Fuel only and let the Stock ECU work the Spark and VVTi, would that work? So in order for me to run my greytop like a redtop (performance-wise) all I have to do is remove the cat? would a custom made headers work? does it matter if it was an auto before? which means I'm using the auto ECU as well and last, and hopefully this would not be the case, if it turns out that the greytop came from a RAV4 instead, would that change things? (CR, Cams, performance, etc.)
THANKS GUYS! 
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Have a look at
http://www.mr2.com/forums/beams/Toyo...-finished.html
You will have to ask Roman about the specifics, he's helpful when he's not in rehab for OCD

Either get the RedTop headers and pay alot, or get some good quality SS316 pipe & elbows and make your own....
The GreyTop has the cat in the primary headers, right outside of the exhaust ports from the head, yuck I know, so de-catting that could give you some gains, or just do it the right way.
BEAMS = MAF
GreyTop = RedTop with grey-coloured valve-cover-cover and grey intake manifold. Doesn't matter where it came from. You can paint it white/purple/green/rainbow whatever if you are gay/lesbian LOL. I'm not 100% certain if the compression ratio was *exactly* the same but I think it is. Same cams prolly etc. AFAIK the GreyTop was just a few HP off bc of the location of the cat.
edit: as far as using the Auto-ECU on a manual, just ground the NSW & PSW pins from the ECU I think was the trick. Someone should chime in on this.