As many have learned the hard way, trying to use an MSD rpm chip with
fuel injection as a launch control doesn't work. The engine goes rich, the
cylinders go cold and the launch is junk.
The cause is that you are on 100% barrel valve opening and the pump is
putting out whatever gpm it does at that particular rpm. Check your flow
sheets for verification. Basically you are drowning the engine.
You could install a solenoid to bleed off some fuel at stage but why not use
the injection the way it was intended? That barrel valve spool acts as a
restrictor for part throttle use and doing it this way allows tailoring the
secondary circuit if your injection is so equipped.
This air operated throttle control is the answer. The butterflies only open
enough to create the rpm you set and the barrel valve stays in it's working
zone. Your foot is flat on the floor and once you release the trans brake
button or the clutch the injector slams open instantly or at a slower preset
rate. The rate adjustment feature is handy for total junk starting lines or
controlling ET.
This is a stouter version than you see on carburated cars. It can be set up
to pull or push the Hat lever without bending. It also has enough travel for
fuel injection which has a longer throw than carbs.
Notes:
This is NOT legal in some classes. Check your rules before ordering.
There is no returning it.
Can also be used on Carburators.
This is a single stage control.
It will not do a down track "stutter" or rpm control.
# 89 .... Dual Action Throttle control kit .... 279.95
Overall length open: 8.5"
Overall length closed 10.5"
Throw: 2.5" (carbs are 1.5")
Overall width with slide bar: 1-7/8"
Cylinder diameter: 1-1/8"
85-125 (MAX) psi required
Extra Air Line
T1410B .......................... co2 1/4" air line, 10 ft ............... $9.95
T1420B ......................... Co2 1/4" air line, 20 ft .............. $19.95
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All sales are final. Items and services provided by Koehler Injection are intended for off road use only.
No responsibility whatsoever will be accepted by Koehler Injection for any damage, injury or loss resulting from their use.
Urbana, IL USA 217-531-1770 M- F 9-5 CST
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Kit includes the air cylinder, air solenoid,
air fittings and 10 ft of air line.
You will also need a Co2 bottle,
regulator and bottle mount to complete
the project.
Installation-wise, this is not so bad.
You will need to move and remount your
current cable clamp to a different
position.
Tap the throttle lever to 1/4-20
Mount the bottle and solenoid in a
convenient spot.
Connect the solenoid power wire to the
trans brake or clutch pedal circuit.
That's it.
Click on Photos to Enlarge
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NC20 ............. 10 oz Co2 bottle ................................... $94.60
Bottle Bracket mounts 10 oz bottle to 1 1/4" to 1 3/4" tube.
NC50 ............... bottle bracket ...................................... $44.95
Single co2 regulator, lightweight, compact for the Throttle Control
Can be direct mounted to your co2 or nitrous bottle.
NC90 .......... Preset regulator for Throttle Control ............ $97.15
Add ONs
Components you will need to complete your system
These items are not included because you may already have them.