Help tuning my new setup

[screwdgie]

So next weekend I should be installing a 2g mas, FIC 550s and a new afc neo. I am still on the stock sidemount with a ported 14b and a 190 pump. My question is where do I start tuning-wise? Right now the car is set at 13 psi creeping to 18. Should I start with the afc set at 0% correction or what? What should I do with the boost? I do have a logger so I kinda have a good idea what to do.

Thanks,
Shane

 

[GVR4592]

Fix the boost creep, then concentrate on the tuning. Have you read the tuning guide?

 

[screwdgie]

I read it, but didn't see anything that deals with the 2g mas and 550s. If anyone is running a similar setup, what do you have your afc set at just as a reference for me to start with?

 

[spyderturbo007]

A 2g MAS in a 1g, pretty much compensates for 550's. Start at zero after following Luke's advice.

 

[Eastwood95]

You're number one priority should be to fix your boost creep, with no boost control tuning will be much more difficult.

After the creep is fixed, set the boost to around 15psi, log some runs and go from there....

o2's should be around .92 on 93 octane and timing should steadily climb (without dropping or being held) to redline. Up the boost little by little if you see those readings with 0 knock and keep logging

 

[screwdgie]

Well i guess I'll be taking the turbo off for the 3rd time again this weekend haha. I'm gonna port the living hell out of it. Then I'll throw the rest of my toys on. I read somewhere that i should richen up the idle or 1000 rpm by like 10% with the 1g mas and 550s, does that sound right?

 

[somdturbo]

make sure when you put the exhaust housing back on the wastegate door is completed shut when bolted to the compressor housing. If the flapper is open at all you will see lots of boost creep.

 

[Eastwood95]

Well i guess I'll be taking the turbo off for the 3rd time again this weekend haha. I'm gonna port the living hell out of it. Then I'll throw the rest of my toys on. I read somewhere that i should richen up the idle or 1000 rpm by like 10% with the 1g mas and 550s, does that sound right?

Are you porting the turbo or o2 housing?
Concentrate more on the o2 housing and wastegate passage around the flapper to get rid of creep. If that doesn't fix the creep, you might have to get a bigger flapper installed.....

As far as the AFC settings........It varies from car to car, if the car idles low, then you can richen it up accordingly

Here's a little tech tidbit from road race engineering,


http://www.roadraceengineering.com/newafc.htm

http://www.roadraceengineering.com/newafcsetting.htm

 

[screwdgie]

Thanks man, that helps alot. And yea I'll be porting the turbine housing and the o2 housing again. I already have an evo 3 o2

 

[screwdgie]

smdturbo, if the wastegate flapper door doesnt shut all the way, then it will be leaking out boost, instead of creeping fyi