Asura

Don't go over 8400 rpm. The F22 won't make power up there without cams which will require more tuning than you can manage with anything other than the EMS or the Hondata.

At 9k the pistons speeds are too high on the F22...play it safe. Get an older 1012 aem EMS, hide it under the dash and leave the stock ecu where it is like a good cheating bastard would do. Not encouraging cheating by any means or specific means, because we both know that never happens in real racing.

-asura

Scot

[QUOTE=Asura,Jun 8 2007, 01:01 AM]Don't go over 8400 rpm.

FASTSIIK

I think the F22 is just as strong as the f20, i take my f22 to 9k almost everyday, and have for almost a year now. The F22 is definalty safe to take to 9k, just avoid long periods in the 8500-9000 rpm range. The engine is worth taking to 9k, it has the same powerband as the f20, just keep your valves adjusted, and your good to go. here is a dyno comparison of the two motors with the same mods. https://www.s2ki.com/forums/index.php?showt...0&#entry9194471

mxt_77

I don't know which class/organization he's prepping for, but I suspect that may not be completely legal, because it requires swapping some sensors and stuff, too. I suspect the eManage Ultimate will be his best option.

One of the classes that I was looking at stated that the ECU must simply be in the OEM casing or whatever. If it's the same for you, Scot, and you have the skills/budget, you might look into the feasability of dissecting your EMS and transplanting it into the OEM ECU casing. If it can be done, I bet a lot of people would follow in your footsteps.

Asura

The 1012 is the 1st EMS same guts different packaging. It is too big to fit in the factory ecu location and therefore requires an extension harness...

ZDan

Related question: What is the lifetime (# of track days, track hours, etc) of a 2.0 at 9k rpm?

I do time trials events, wonder if I should be limiting my 2.0 to 8500 as well except for timed laps, if consistent 9k usage would mean yearly rebuilds.

124Spider

The 2.2 has a longer stroke than the 2.0, so the piston speed is greater at the same RPM. Hence the lower redline. The 2.0 should be able to do indefinite track days in stock form, without blowing up.

krazik

[QUOTE=FASTSIIK,Jun 8 2007, 05:42 AM] I think the F22 is just as strong as the f20, i take my f22 to 9k almost everyday, and have for almost a year now. The F22 is definalty safe to take to 9k, just avoid long periods in

tinkfist

Let Scot take what he wants from other's posts. No need to spread the arrogance.

ZDan

Understand that longer stroke = greater loads. But the 2.2 has equivalent peak piston acceleration at 8565rpm as the 2.0 at 9000 (2.2 has equivalent piston speed at just under 8300). So if the earlier post about a yearly rebuild at 8500 on the 2.2 is accurate, that might imply that a yearly rebuild would be required for 9k with the 2.0, theoretically.

Just interested to hear if there are any real-world "life" issues on tracked 2.0s that are consistently taken to 9k. If so, I'll limit myself to 8500 except for timed laps.