Thanks for the info.

 

I agree here. Fuel cut is in place to prevent more air from going into the motor than the fuel system is designed to accomodate. So if you're hitting fuel cut but haven't made any adjustments to your fuel system, then you have more problems than just the fuel cut itself. It also means you're probably fast approaching the physical power limits Mitsu engineers believe possible with the factory fuel system.

This part is not accurate. The DSM ECU fuel cut is implemented as a hard coded comparison against airflow. There's nothing learned in the check. Resetting the ECU won't do anything with regards to fuel cut. I suspect the same is true for the EVO8 ECU as it's so similar to the 2G DSM ECU (at least in hardware design, and I gotta assume software too). But I will defer to those more experienced with the EVO ECU until I get a chance to look at the code myself.

Thomas Dorri

 

Hi Tom,

This is another one of the "urban legends" that many DSMer's thought was happening I guess. Fuel cut seemed to occur at the same point over and over after making changes so the conclusion that the ECU "learned" it. Actually it was just duplicating the same conditions over and over.


Speedlimit.........

 

Nice job AMS. This is Jason from Renner Mitsubishi up in Milwaukee. I'll be down there in a few weeks for a dyno session on my eclipse. I'll have to check that bad boy out.

 

Hi. Probably doing modifications this week. What is a good instrument to measure a/f ratio? I do not have access to an AWD dyno, and I don't own a wideband O2 or anything. Also, anyone have settings for the SFC for 20psi to keep a/f ratios within limits?

 

Hi, i think i saw you at byron raceway this weekend on the 5th of April? I was under the impression that your evo, if it was you at byron, was stock. Crazy runs btw, anyways...i was wondering what a stock evo dynos at and what 1/4 it runs. According to SCC it was 12.8? Don't really believe the SCC articles cause they ran a 15.8 1/4 mile because i was running 15.3's and 4's all day and there have been reports of 14.9's. Oh, and my wrx friend is in disbelief and i want to put him down so please do inform me.

 

Nice Times!!!

Once you guys at AMS figure out the timing pull issue, I'm sure we'll see even better times with that same exact set-up!

 

I am installing the emanage today with the fuel cut defensor, and it has also the ability to adjust ignition timing, I will post the map after I can get a dyno tomorrow.

 

Sweet. Thinking about getting the emanage myself. Definitely keep usposted.

 

Installed the SAFC2 in my Evo 8 today, along with a Hallman boost controller. Did it outside in the snow (yes, it snowed here in NJ, in April). SAFC2 was a ***** to install, because it didn't have an English manual, and Apex was no help. Got it figured out though. If anyone needs wiring help with it, let me know. Also put in the new style Hallman boost controller. Trying to make it to the track on the next nice day out.

Anyone have SAFC2 settings for 20psi, with a safe yet powerful a/f ratio? Thanks in advance.

 

The test with the S-AFC and boost controller (& air filter) netted about 309whp, when we added the cat-back we made 321whp. I can see how some of the tests can be confusing and I will rework them to make more sense. We have our next batch of upgrades coming very soon for the EVO that will put it into the 11's.

Martin

 

you peps are lucky that you have no jumpy rpm signals on the safc. us 6g72'ers have a huge problem with jumpy rpms using a safr or hks afr. i have an afr and dont have a fix yet so my rpms jump like MAD. but we tuned up to 8Krpms taking this into consideration. after my break in period i am putting a new piggy back system that acts like a standalone; control timing and all that jazz.

SWEET NUMBERS THOUGH....makes me really wonder why i spend soooooo much cash on my car when your cars could whip up on mine stock.

i am sure i will get flamed for this. but if you are gonna increase injectors are you gonna increase the fuel pump, maybe a boost sensitive fpr. mine works great. at idle my fuel psi is around 45 and during the onset of boost it climbs to 65. my dyno curve is almost perfect straight upward line. (thats because s/c though)

AFTERMARKET support for your cars is amazing. the car has only been out for a month or so and there is like 3-4 companies postin on this board with numbers in the 12.5 range. a guy on club3G board, with the s/c kit that i have is throwin down like 293whp and is only makin a 13.6. Traction is a huge problem though. well sorry to get off track. GOOD JOB and KEEP IT UP

 

At this point, the EVO is following the DSM mod path very closely... so to answer your question, BOTH the fuel pump and injectors would need to be upgraded as more mods are done (and I am assuming that the stock EVO fuel pump needs to be upgraded, but I could be wrong?).

However the injectors are only good for "so much" power and will eventually need to be replaced depending on how far the car is in the mods department.

 

the stock 560cc/min inj. will support close to 400whp (at the front wheels), Safely I'd say 375whp. On DSM's we've taken 550cc/min inj. up to that level and maxed them out. BTW the stock FPR is boost referencing, so for every psi increase of intake manifold pressure there is a psi increase in fuel pressure. We'll be doing the fuel pump install here shortly and if it works out well it will only be about $125 for the whole pump and install kit.

Martin