20v rev limiter

[JP]

the ozclubbie guys use a 555 timer to gernerate a constant ground pulse signal to raise the revlimit when they dont have a pulsed output from the speedo.

[boon280]

has anyone got a diagram of how to wire one of these into my loom?

[FMS01]

This is the 555 timer circuit that Richard (LMR052) on Ozclubbies came up with, apparently several of the guys are using this circuit successfully.

Cheers,
Julian.

[robakka]

Also correct me if im wrong error 14 is an ignition code eg. no igf signal..

[boon280]

This is the 555 timer circuit that Richard (LMR052) on Ozclubbies came up with, apparently several of the guys are using this circuit successfully.

Cheers,
Julian.

Thanks for this I just took this diagram to my electronics guru and he will have one built in a few days, He said everythink looked like it will work fine.
Thanks for your help.

[FMS01]

apparently it should be able to be built small enough to fit into a plastic film cannister (does anyone still have these??)

Julian

[boon280]

yeah the guy doing it is going to put it a standard 12v relay case like you would use on your spotlights or something like that.
so it should be pretty neat.

[Alex63]

Hi Guys,

have had this cct built and works a treat. It gave my 86kw Bluetop engine an increase in revs from about 6700 to 7500. Don't know about the top end speed limit as yet because I haven't been on a track that will let me get to this speed - Normally I do Hillclimb events.

Nice small unit that fits basically in a matchbox size plastic box.

thanks for your knowledge transfer....

Alex.

[Wiggles]

It gave my 86kw Bluetop engine an increase in revs from about 6700 to 7500.

Cool, i thought the 16v 4AG's were limited to 7200.
Does the 7 rib bigport have the same rev limit? If so, I'll have have to make one of these for sure!

[Fred_SPb]

Also correct me if im wrong error 14 is an ignition code eg. no igf signal..

Right, 14 - Ignition - No IGF signal to ECU for 4 consecutive IGT signal during engine running - Open/short in IGF/IGT signal from igniter to ECU, Igniter malfunction, ECU
If ECU has no IGf signal - it not pulse injectors, to prevent cat overheating.

[annoyingrob]

join spd to #10

That has got to be one of the most inventive modifications i've ever heard. This should in theory work on almost any Toyota vehicle.