ok iv seen this done in pr, from what i understand so far "2 step" is ment by spooling up the turbo before launch by cutting the trailing coils? am i right?

 

you can use a 2 step on an N/A engine as well,it is used as a rev limiter and randomly cuts spark to lead and trail coils at an rpm that you choose by a pill you plug into the module.

 

do you where i can find some more information on this "pill" and where i can get it???? i have a s4/5 mazda luce turbo engine

 

any auto parts stores that sell performance parts in your area should carry them,just ask for 2 step rpm pills,they come in a variety of rpm ranges so you need to tell them your selection.this is assuming you have the 2 step modules ?

 

nope, tell me what i need and what im need to do before install ill make a write up since i cant find any btw whats the difference between 2 step and anti lag?

 

[QUOTE=whats the difference between 2 step and anti lag?[/QUOTE]

From what I have read, they both yield similar results with anti-lag being more complicated and more effective, but rougher on parts. As far as the rest of your question, I believe you have to have some sort of ignition box like a MSD 6AL with a two step module plugged in to have a two-step, unless you have a standalone that has a built-in two-step. It can get pretty pricey.

 

Two step is a simple rev limiter. For example on the car we've been playing with at the local strip the primary engine rev limiter is set at 9300 rpm. Shift points are about 8500. The two step is set to 8000 and is wired through the clutch switch. So that when we're at the line, with the clutch pedal pushed in and the throttle buried on the floor, we hold 8000 rpm. Why 8000? It's the arbitrary point we picked to start launching at when we got the car out for the first time last week. We'll play with that number up or down if we feel we need to make adjustments to correct the traction/bog situation. That's all a two step is. A secondary rev limiter to hold the engine at a set RPM, usually short of the primary rev limiter. It's main purpose is to make you more consistent in launching the car since you can leave at the same RPM each time.

Anti-lag is a function that retards ignition timing and/or dumps much more fuel in an attempt to create exhaust heat and pressure in order to spin up the turbo in an off throttle situation. You can use this while staging for a drag run or like you see/hear in a rally car during off throttle corner entry. Anti-lag creates a lot of heat in the exhaust and can be hard on parts. It also allows you to pretty much make as much boost as you want while sitting still. So you can leave the line after building 20 psi.

If you have a stand alone it might have a two-step function built into it and all you need to do is figure out how to activate it. If you don't have a stand alone you'll need something like an MSD 6AL which has a rev limiter built into it. Problem is you'll need to cut all three ignition channels so it involves more than just wiring in one simple box.

 

https://www.rx7club.com/showthread.p...highlight=step

Another explanation.

 

You'll need two MSD 6 AL's, 3 relays, 2 step box, Switch/Button, some pills and alot of wiring.


Or, buy an ECU that has it built in.

 

It's just never the same.

 

I thought the two step that's built into the Haltec works pretty good, no ?

 

I have not seen an ECU that can rival the MSD's two step. Some get pretty close but never the same.

 

That's good to know.

BTW......... this is completely off topic but........ do you know if a 28/11.5/14 tire will fit on a 1st gen rx7 with the stock frame rails ? Minitubbed of course......

heck, I'll probably just make a new thread