Kamotors E30-Turbo to ITB M20

[kamotors]

yup, took away another 5 degrees of timing near peak torque.

[kamotors]

all better:)

[Denny]

all better:)

Somehow I knew it would be right back up in no time... Wish I had the free time :(

what does your timing map look like now?

Also I'm thinking of adding this valve for extra security and to really limit boost: http://www.928motorsports.com/parts/...mitervalve.php

I read in a few forum it Looks like its very popular..

[kamotors]

seems like a controlled boost leak.

also MS can do overboost protection mine just happens to be set at 25psi

[Denny]

seems like a controlled boost leak.

also MS can do overboost protection mine just happens to be set at 25psi

yeah with MS its more like a rev limiter bloody nose option lol... better then nothing.

The BLV will limit the boost at what you set and wont move and keep the air circulating like you said a controlled boost leak.

I like the idea since it provides assurance especially with a turbo that can spike. If these could be made cheaper "hint hint" it would sell like crazy lol..

[kamotors]

installed a 3.15 Torsen differential today, So much better, can do the most controlled donuts ever, can run huge circles with ease, the way a torsen locks up compared to a clutch type is so much smoother and more predictable.

[TheTacoMan]

Rust your hood brah.

[LowR3V'in]

Is torsion factually and technically better then clutch?

[kamotors]

its all a matter of opinion, some prefer clutch, I prefer torsen. Basically you can kick the clutch while going straight and you'll spin tires but you wont go sideways, on a clutch type the rear end is basically always going to kick out in some random direction.

[FLG]

its all a matter of opinion, some prefer clutch, I prefer torsen. Basically you can kick the clutch while going straight and you'll spin tires but you wont go sideways, on a clutch type the rear end is basically always going to kick out in some random direction.

Imo clutch diff's are much more predictable then torsen. Yes it might be better then a worn out stock unit, but comparatively a well built/not worn clutch unit will out perform a torsen, not to mention if you lift one wheel that torsen is now an open diff.

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[Good & Tight]

took away some more timing near peak torque.

IMO you still have too much timing in the 140-160kpa area. You might want to pull a few more degrees out 27*-28* is a lot.


Here is my M30 timing map, I run E85 though.

[kamotors]

thanks for taking a look at the map, I've taken more out since that map, and I'll double check that area again today.

[kamotors]

Hows the newest tune looking as far as timing advance?
car feels good.
this is 91 octane and methanol injection.

[whodwho]

Still looks a bit high for my taste by about 5+ degrees around 100kpa, usually around 27-30 for peak torque there

[kamotors]

Imo clutch diff's are much more predictable then torsen. Yes it might be better then a worn out stock unit, but comparatively a well built/not worn clutch unit will out perform a torsen, not to mention if you lift one wheel that torsen is now an open diff.

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Like I said its an opinion, park on top of a patch of sand and dump the clutch with both diffs and the clutch type locks real aggressive while torsens take off similar to an open diff in the way that it tracks straight 99.9% of the time and you actually move forward.

Its not an issue like i was on a worn diff since I've had 5 different diffs since I've owned the car, a torsen diff really doesn't fish tail under hard accell. I'm willing to bet drifters probably hate torsens for that fact.

also since I've done at least 2 snow season on each type of diff I can say a torsen is also MUCH more controlled for snow driving in about 1"-2" of snow, anything more and I just drove a different car.