Boost comes very strong @ 4k all the way to about 7.5K rpms.....

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Old 08-12-2003, 07:12 AM
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Default Boost comes very strong @ 4k all the way to about 7.5K rpms.....

what would be nesseccery to have the boost kick in at 3k or so?

1). larger turbo?

2). anything else?
Old 08-12-2003, 12:18 PM
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Default No, smaller turbo = less lag = boost comes on sooner.

I have a k24 and the boost comes on around 3000 or so. You could swap out your k26 for a k24 if you want less lag.
Old 08-12-2003, 12:28 PM
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Default 2) You can use NOS to eliminate the turbo lag.

I heard of setups which utilized a direct port shot of nitrous oxide(and fuel) to overcome turbo lag.
Once the system detects positive pressure and/or a preset rpm, the NOS sytem is disabled and the turbo takes over.
Old 08-12-2003, 05:30 PM
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Default Re: No, smaller turbo = less lag = boost comes on sooner.

Where did you get your k24? I have been looking now and then, havent found one yet.
Old 08-12-2003, 06:59 PM
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Default David Vizard's a big proponent of turbo + NOS

Vizard's an engine tuner and author who has extolled the virtues of adding NOS to turboed motors to rid them of turbo lag. Most of his engine (Ford SOHC 2 liter, BMC A-series, small block Chevy, plus generic ones) tuning books contain at least one chapter on this topic.

He says that the NOS bottles last surprisingly long, since they're "on" for just seconds at a time.

I saw this done to a pretty outrageous Suzuki GSXR 1100cc street bike that dynoed at something over 300 hp at the rear wheel. (Mind you, even a stock GSXR, with maybe 140 hp to propel 450 pounds plus rider, will blow any Audi into the weeds.) The workmanship on this bike was superb: it looked stock from even a foot away. If you examined it closely, you saw that the fairing hid the turbo, the nitrous bottle resided in the seat, and the cantilever swingarm was a couple inches longer than stock to keep the front wheel on the ground during acceleration. Truly a sleeper. (A vendor used to bring his mobile rolling road dyno to Daytona each year and run a max hp contest. This bike, from South Florida, won the contest about 6 or 7 years ago. I don't know if he could add NOS + fuel while the turbo was at full boost -- he'd added the NOS to get instant launches. You need lots more hp than that now to win, but the bikes don't look stock.)<ul><li><a href="http://216.239.53.104/search?q=cache:NM-kj-3Ab-sJ:www.diy-efi.org/efi332/html_archives/archive_num_38/msg00066.html">http://216.239.53.104/search?q=cache:NM-kj-3Ab-sJ:www.diy-efi.org/efi332/html_archives/archive_num_38/msg00066.html<
Old 08-13-2003, 07:58 AM
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Mine is OEM. The 1990 200s come with k24s, the 1989s are a mix of k26s and k24s.
Old 08-13-2003, 11:50 AM
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Default so looks like my next mod is going to be a K24 turbo.

whats a good price on a nice used one?
Old 08-13-2003, 01:01 PM
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Default 4k sounds a bit too late...

mine comes on at around 3000-3200, but I start feeling it at around 2700 (I use SJM 1.8 bar chip). My car is an 88 with a K26.
Zsolt
Old 08-13-2003, 02:48 PM
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that is what I have. I have normal boost @ .04 bar at start up and idle.
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Quick Reply: Boost comes very strong @ 4k all the way to about 7.5K rpms.....



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