The Mis-Firing System? Help?

Yeah...I was jus watching WRC and saw the rally cars have that misfirin system. Doesnt that Mis-Firing System make the turbo always spool and never lag? i dont know but heard it in the WRC shows, and i want one in my DSM..ahhaha...well, is it possible? Is there anything like that to get in the U.S. for your DSM? well...thanks...

Its a anti-lag system. It basicly shoots flames throught ur turbo so it would spool a t-66 at like 1500rpm's But you would kill the turbo with in 2 months. It also kills ur exhaust. Their are other systems that use a spark plug and some thing that brings used fuel into the manifold. Just look up anti lag turbo systems on google. My friend has a thing like that on his rx-7. http://www.rallycars.com/Cars/bangbang.html

There are several stutterbox systems out for DSMs. TMO, Keydiver, etc, and ignition cut like MSD ignitions have. The only thing I am aware of that is specific to DSM with actual antilag though is DSMlink. Retards timing and dumps fuel so part of the combustion process occurs in the manifold/turbine housing. It does help spool, but to say that it would take 3000 rpm off the boost threshold (t66 at 1500) is a gross exageration. And it only works while stuttering on the start line (to launch with boost) or during a shift. So it really has nothing to do with what rpm you get full boost at. A regular stutter box will build about 15 psi on smaller turbos (up to 16g) and 10 psi on 20g/50 trim sized turbos. With DSMlinks antilag you can get over 20 psi on 16 and smaller. In my case I build zero boost on a 5500 rpm stutter with a T67, but can probably get ~5 psi on antilag. I dont use antilag on the shifts, just a regular 6000 rpm stutter. Took 7 tenths off my times last time I took the car to the track. I plan to try it with the antilag enabled next season.

I was talking about a t-66 on a rx-7.

Is that accurate? It still seems awefully high. I know rotarys put out tons of exhaust heat which should help, but I thought they were still pretty slow to spool big turbos. Interesting.

I was under the impression that rx7's are lower displacement and take even longer than a DSM to spool. I don't think you could spool a T25 on an rx7 that low.

He has a anti lag system on it that injects unused fuel into the exhaust manifold with a spark plug to ignite it, and a modded ecu. I think he is pushing 10psi. I will have to give him a call when he gets back in town(he drove 4 hours to the closest track). I might now be quite 1500 but I know its under 2000. It also is somewhat boosting at idle.

Rx7s have low displacement but fire more often. With a typical 4 banger only half of the motors displacemtn is fired per revolution. I believe a rotary ends up being basically double its displacement, but at the moment the mechanics of why that is escapes me. I'll think it over for a bit, but perhaps someone well versed in rotary motors can chime in before I get around to it.

But just for the sake of trying to get the ball rolling, a rotor has 3 combustion surfaces each. So 6 total combustion events per rotor revolution. Now, I believe the rotor spins 3 times slower than the "crank," So that would be 2 combustion events? But this still doesnt help me because I can't recall how the rotarys displacement is calculated. Damn it all. :)

Since a rotary utilizes three firing surfaces and has the ability to rev so high, it could very well with little modification spool up a turbo such as the T-66 efficiently at 1550-1600 RPM and it can very well spool up faster than a standard DSM, but in the end we all know a moded up DSM will and does kick ass

yo, is there a site where i can get info of the "misfiring" system? thanks

google antilag, stutter box, launch limter, etc. I dont know of a specific site.

the site a couple posts up in this thread has a bunch of info on the antilag system in general. nothing specific for eclipse but the site is http://www.rallycars.com/Cars/bangbang.html

is this the misfiring system?
http://www.dsm.sillymods.net/files/fireball_0001.wmv

jus found it cruzin the net

uhhh...can anyone look at the clip i got?

Just know that there is a difference between stutterbox, anti-lag, and No Lift To Shift, NLTS. Stutterbox is off the line, and the other two are during shifting. anti-lag is our equivalent to the misfiring system. NLTS is a rev limiter when the clutch is in (you shift with the gas floored and it bounces off that rev limiter). Both could cause misfiring.

And it's also worth mentioning that just because you get a pop out the exhaust and all that, it's not actually a misfire that we want. Thats a shitty term for it. The ignition event completes just fine. Its just a little late ;)

That video seems to show regular stutter box on the shift (no lift shift, full throttle shift, stutter shift, flat shifting, etc). TMO chips were doing that on DSMs 10 years ago. ;) Still effective, and reduces lag, but not the "anti-lag" we refer to where timing is pulled and fuel is dumped in. Well, it could be, just going from the sound of it though I dont think so.

Find a video of a DSM demostrating a typical stutterbox like TMO and note the sound. This is a video of a car using DSMlinks anitlag. You can tell it sounds real rich.

http://www.theta.net/nichols/newengdsm/bill/bill_antilag.mpg

damn, does that thing, the "anti-lag" system give ya horse power? it seems like it. How much is it worth?