So on the LT8 it cuts FUEL correct? Im still wondering how to set it up, i have the gist of things put havn't pinned it in my head yet.

 

18-25 at 7500 rpms? damn.. approzimate turbo size for that?

I make the 4-5 psi at 3k on a to4s 1.01 rear AR.

 

Im still wanting to know exactly how to set it up. wtf why can't anyone help me out. THought this was a loving forum..... I got the gist of it but just don't understand some stuff.

 

isnt it in the manual? I will scan it for you if you don't have one.

 

Manual?? You refering to the MT/LT guide?

 

The basic set up of the two step IS in the manual. Some people are asking not how to set it up, but what everyones suggestions are for the RPM lim, the enrich amount, and the amount of retarded timing. (I guess)

It's like rx72c said, It's not something people share. You are somewhat risking your engine on your way to a good two step tune.

I'd suggest starting out with alot of enrichment and alot of timing retard.

 

This is exactly what im talking about. From reading, i have lt8, older microtech so that means it cuts the fuel and not timing correct? with these darn microtechs, some stuff just seems a little risky.

 

just startn,,, all engine tunin can be risky, at some point you gotta go on your own way!

kinda like growin up, if you follow everyone elses ideas, then thats what you will do ,FOLLOW!!

 

Wow just wow. thats all i have to say.

 

My 7 came with a microtech but it was only last week I dove into it to see whats possible with them. I read in the manual that revlim cuts fuel but does not take the secondaries into account, thus leaning your afr. So don't use this! Unless u revlim unless the point you set it has not met the conditions for the secondaries to operate yet. Lean mixtures are baaaad but if there's no fuel at all it's not bad since no combustion can take place.....

And sometimes doing things on your own is better then believing Joe blow on the car forum. That includes what I've said above - though I'm pretty sure I am somewhat correct in theory.

 

You use the inp_revlim for two step.

Dont use the revlim for anything else.

 

Sorry I should have clarified that. But the revlim function works the same just used for a different purpose than inp_revlim.

 

The inp_revlim does not cut secondaries off. As a matter of fact it will add a considerable amount of fuel. It is an IGNITION cut.

 

wow im suprised how they name the functions

inp_revlim - cuts ign
revlim - cuts fuel
revcut - cuts ign

?

 

Its abit stupid but the inp_revlim is a auxiliary triggered function and it has a specific purpose. Thats why you should not play with an ecu unless you know what your doing really at the end of the day they are not designing the ecu to be used by a little kid

 

You can order a Microtech with revlimit ignition cut. revcut still cuts fuel to all injectors, but revlim will cut spark. You can tell if you have this option or not by tuning the revlim down to 2000rpm or so and revving until the engine limits. IGNCUT will flash up in the status box.

 

Where is the status box exactly? data screen 1?

I figured my rev lim was secondary fuel cut, on account of it revs like around 1k to 2k above where I set it.

IGN cut would stop it in it's tracks no?

I was worried, because when I figured out the microtech had two step, I expected to see inp_REVCUT, not inp_Revlim.. but apparently there is only the revlim.

good information though PDF.. I wish microtech would make all there computers with all the options that are free for christ sakes.

 

old thread but very informative. just wanna add that a 2-Step is just an ignition cut(inprevlim) at a desired rpm, and Anti-lag is were you take away timing and add a great amount of fuel causing the loud bang. The piston guys usually retard their timing around 40deg. if you just wanna cut ignition for a consistent launch(finding the sweet spot) then just use the inprevlim. thats the best info i can give you guys.

Now for what i want to know. I have an Lt10s and is boost cut a fuel or ign cut?. im also only using revcut which should be an ignition cut as well. It freaks me out reading the manual saying its all fuel cuts, it will make anyone nervous lol

 

Yes the manual is right.

Boost cut is fuel cut
Rev limiter is fuel cut
2 step is fuel cut

That's just the way Microtech is, things will never be the same.

 

does anyone know if their is a fuel cut rev limiter on a stock na 13b 5speed?

 

i use it nice flames too!!!

 

Any videos of it and are you using the fuel cut one

 

I might give 2step a try on the 8 I have the lt10

 

Alright here is a first start tune for everyone 4.0 Ms enrich and 0 degrees timing on 2 step 5 psi at 5500 rpm limit. Now in the video you can hear the difference between me not using the "button" and putting the petal to the floor and when I engage the 2 step.
Enjoy:-)

 

is this the fuel cut? or ignition cut