easy anti-lag system

[Jörgen Karlsson]

An ALS usually use a valve that bypasses the throttle, adds fuel, retards
ignition and misses ignition pulses.

One suggestion is to use a switch on the clutch pedal that activates the
system, if the clutch is down the system will be active. This opens the
bypass valve, activates a MSD ignition retard (20deg), activates the low
setting on a MSD soft rev limiter (3000rpm?). Some tampering with the MAP
signal also helps. A hoobs switch set at the desired boost (2-3psi?) can
close the bypass valve to regulate the pressure. This way you have most of
the functions of a real bangbang. An electronic blow off vavle can let the
turbo spin more freely, it is not really boost you want, it is a fast
spinning turbo.

The above system would 'stutter' at 3000rpm when the clutch is down and the
throttle is closed and will release lot of energy in the exhaust manifold.
An EGT meter is very important as the EGT will be _very_ high when the
system is active. The more fuel you add the hotter it will be...

Prepare to fix cracked manifolds and broken turbos if you use a bang bang, a
small NOS shot is probably a safer soloution. but dont let this stop you.


BTW we used a MSD rev limiter set at 2500rpm on a friends syclone, it raised
the boost from 6psi at 3k without to 19psi at 2.5k with the rev limiter off the
line. That is to much...

Jörgen Karlsson

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org