RE: [s-cars] Mmmmm, Turbo :) (Richard Kurtzer)

[Lewis, Gary M]

Hap Said:

> Christian
> 
> Once you get your turbo and header, you've only just begun 
> your quest. You 
> will also need a custom downpipe. These tubular headers and 
> the Sport Q IMs 
> require you to abandon the stock air box since they mount the 
> turbo right where 
> the airbox currently resides. These large hybrid turbos also 
> put your power at 
> or beyond the theoretical limit of the stock rods. Cody 
> Payne's recent rod 
> incident with his newly rebuilt engine with only the Super RS2 
> Ola Especiale turbo,

Only?  Ouch Hap...  :^)  Is size still everything??  You did say it was cute...

I'm beginning to think the Innovative RS2++ BOLT-ON is better than I ever thought.  I am convinced it is the best BOLT-ON for the UR-S4/6, at least what I've seen.  And if anyone has experienced better, please chime in.  With usable details...

>  points out the weakness in the stock components. In 
> addition there is the 
> short comings of the stock I/C. I never mentioned this before 
> during the recent 
> FMIC debate but with the additional flow from a larger Hybrid 
> or RS2 even you 
> will heat soak your I/C much sooner. 

Amen.  It has been warm in Los Angeles, and the second 1st to 3rd gear runs shows A LOT of retarded timing.  Would take 4 or 5 runs when ambient was below 60F.

> In addition, you will also need a Big MAF upgrade. Somewhere 
> around 420 or so 
> crank horsepower, the velocity through your stck/RS2 MAF will 
> suck out the 
> hot wire coil. This will require the PBMAF upgrade and with 
> or without you'll 
> also need custom software. Did I mention bigger injectors? 
> So, what seems fairly 
> reasonable on the surface can get real intense further down 
> the slope. If 
> you're not considering these other mods I would highly 
> recommend staying with the 
> RS2 or T3/T4 Garret hybrid route. There are lots of SW 
> options that do a 
> great job and have been proven on the dyno.

I was going to chime in on this thread after finals, and here I am.  This thread started out as "Save some money, get more performance" with tubular mani and Garrett Hybrid vs. RS2.  Man, there is NO WAY anyone is gonna save more money going this route in the near future, as Hap pointed out all the stuff needed in addition to.  Perhaps after someone like Hap or MLP get all this sorted out and canned in a year or two, maybe.  But the current canned bolt-on approach (RS2 stuff, 26ish psi S/w) is WAY less expensive than sorting out a custom system.  The custom system SHOULD go faster once optimize, but someone going this route is in my opinion at least $5,000 away from SHOULD.

Gary Lewis

1995.5 S6 Avant, Green/Ecru, RS2 MAF, RS2 Exhaust Manifold, RS2 Injectors, Custom Turbo (K26 Turbine, Factory K26 Cold side (Audi Works '999' P/N) with 50mm intake and custom Innovative Turbo compressor wheel), TurboXS Type 25 Bypass Valve, Bilsteins, Eibachs, Big Reds, Spec II Clutch.