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Brad (& family) had a vendor tent at the SOC. He had some incredible stuff on display, like his adjustable springs, polyurethane bushings, solid front motor mounts, and an amazing 5th injector controller computer system that will just blow you away.
He also had a cool (appropriate adjective) Aquamist display that showed you how it all works, and provided a nice mist shower in the 100 degree heat. He had a SOC-only discount going, and it was too good to pass up. I went for the 2c model with an accumulator.
Since he was there, I decided that there was no better place to install it! So, I pulled the SpuG up next to his tent, we removed the hood, and went at it. They were going to walk me through it, but his nephew Terry pretty much took over the install. I helped where I could! Plus now I know how to do it right (as we plan to install this on our race car). In any case, we installed a 1 mm jet in the intercooler outlet hose, set the pressure switch to kick on at 6 psi, and I went off to test it out.
Since I had been trying to use fuel to make up for the lean conditions generated with 20+ psi of boost (30 lb injectors, RRFPR, modified fuel chip), I was running way to fat (thanks, Terry!). I swapped out 4 different ECU chips that I brought with me, settling for the leanest one I had in the end. I think I might go back up one step on the chips, reasons to be explained in a moment.
The air temperature at the time was nearly 100 degrees, and the humidity was likely near 100%. I opened it up once I was on the highway, going WOT in 3 - 5 gears. Previously, I was able to maintain a solid 23 - 24 psi, with ocassional fade to 20 psi or so due to pre-detonation. Pre-det would occur a lot on days like yesterday, which would greatly hinder performance. With water injection, the weather did not even matter one bit. The boost was strong and smooth (much more effective) in all gears, reaching peak levels of 27 psi in 4th and 5th gears. The power is incredible. As I told Brad, my official mod test is to see if it can make me laugh out loud. This did. It made me cackle, the performance gain was so obvious.
I have some fiddling yet to do (need to fatten up the fuel a little bit for the 27 psi!), adjust the AMM for a leaner set up (Brad and Terry suggested 600 ohms!), and I think I need to adjust my timing to be able to compensate for the increase in peak boost. I doubt that my pistons can take 27 psi for very long, but we shall see. I think that with a smaller jet on the water output, I can reduce the peak boost a little bit.
If you were on the fence about water injection, get off it. Go buy it! It's amazing. I should have done this a LONG time ago.
Mike
88 SPG
95 Aero
PS: Brad runs his water injected Saab 900 turbo with 87 octane fuel. No problems! It can pay for itself with the fuel cost savings!
posted by 12.40.175...
, Mon, 5 Aug 2002 13:01:31
, Sun, 11 Aug 2002 23:17:47, Sun, 11 Aug 2002 23:23:45
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