what should he know? EVOIII tuning

[Mike_GSX]

Hi,
I'm bringing my GSX next week to the guy that mounts all my parts.
(EVOIII Package FP all ported, ported manifold, ported O2, AFPR, 255hp, 650cc, DSMLINK, new timingbelt, new oilpump, big fmic, new and better clutch and a lot more other tings...

He is going to tune that thing on a dyno.
Now what should I tell him, for what does he has to look especially for?

- No Knock through the hole powerband
- Timing should rise steady to about 20/22 degrees
- That the EVOIII is likely going to creep. So that he isn't that surprised when it
happens
- ?
- ?

I think he already knows the most of it, because his a good tuner here in Switzerland, but he's doing most tuning with SAFC.

Thanks

Mike_GSX

 

[Mike_GSX]

Or is tuning tuning, doesn't matter if its with DSMLINK, SAFC or something else?

Thanks

Mike_GSX

 

[donmagicjuan]

What octane will you be tuning for? I'm assuming you will be shooting for the maximum safe boost with no knock. Typical values for the EvoIII on pump gas fall around 20 psi, give or take. The 2G timing map peaks at 16 degrees on the highest load map. Depending on your ability to ward off knock, you may be able to advance this as high as 20-ish and still make good gains. However, this can be tricky when tuning with pump gas. It sounds like you've got the gist of it. Aside from what you listed, I would suggest a target AFR of around 11:1 (again, assuming 91-93 octane).

EDIT: One other thing to note, since you mentioned the guy's experience is predominantly with AFCs, is that the injector dead-time compensation should be set correctly. I'm not proficient with DSMlink, but a little searching would turn up some appropriate values used by other members with your size injectors.

 

[Mike_GSX]

Thank you for your respnse.
I will be using 100 octane here in Switzerland, thats about 95 in the US.

Any other helpful answers ?

Thanks a lot
I really apreciate that

Mike_GSX

 

[andymoraitis]

Since you're gas is a bit better than our 93, you'll have slightly better knock suppression to support a bit more boost on pump gas. If you had a choice, running stock timing and more boost will net greater airflow and power than lower boost and more timing. Don summed it up just fine. As long as the global and deadtime settings in Link are correct and you set the motor up for an 11:1 A/F, everything else will be timing dependent in terms of how much boost you'll be able to run.

In general terms:

Set the A/F at the desired level (11:1)
Set the timing map to stock 2G specs (peak at 16 degrees with a smooth curve)
Set the desired boost level and monitor for knock

When you see 2-3 counts of knock, either back down 1 degree of timing or a bit of boost until knock goes away. Just remember not to run your timing too low on cast internals as these are not as heat resistant as forged internals. Around 14 degrees is the lowest I'd safely go.

Enjoy,

Andy