AFC adjustment

[Deezel4x4]

I have recently installed a #8 plate and am trying to adjust out the off the line lag. I went back in and slid the plate forward about an 1/8 of an inch. Noticed a little difference. Anyway I am wondering if my lag can be adjusted out with the starwheel alittle

 

[jimk]

lag

I had lag also, try to screw the no screw in a couple of turns. It is on the back AFC housing . I think that a 10 mm wrench is what fits it. To much will water your eyes, this is the pre-boost screw. good luck Jim

 

[Deezel4x4]

Idid not see a 10mm nut on the back of the AFC,also what do you mean by too much will water my eyes? I don't get it?

 

[Extreme1]

BIG SMOKE!



Watery eyes.

 

[Jeff H]

Theres a cover over the locknut. Did you take that off? If your locknut is missing then you it may have backed off cauising more lag.

 

[Deezel4x4]

sorry did not know about the cover. I saw it and was not sure whether to remove it or not

 

[Deezel4x4]

the little cover on the back of the AFC appears to have a breakoff bolt and a standard screwdriver bolt head

 

[diesaldual]

Deezel,

did you get this problem taken care of?

If so how much did you turn the pre boost no-screw?

I turned mine inwared about 2 turns helped a little, but got more smoke off the line.

 

[WKener]

Crank the star wheel 15 clicks or so towards the engine, see if that helps some. Also, besides sliding the plate forward, make sure that the top of the housing is pushed forward, that should control some of the midrange power.



Someone correct me if they know better, but what I have found to be true, is that the star wheel controls the very low end power/smoke, while the housing itself will adjust the midrange power/smoke, and sliding the plate will open up the top end.



Right now, I have the star wheel set back just a little to decrease low end smoke, my housing is slightly back from full forward, and my plate is slightly forward from center. I settled with that combo after playing with it for quite some time for the following reasons:



This setup has netted me just enough power to get by off idle and accelerate (towing), and it generates all the power I need midrange and up. So while driving empty I have almost no smoke off the line, and I wont get smoke all the way through the rpm range unless I am on it hard, at which point it will smoke like a train, and pull like hell with 33-34lbs of boost. So in basic terms, I do have quite a bit of turbo lag (by choice), but it really hits hard at 1700rpm (when I am towing, I keep my rpms at 1700+ anyway). This setup has also improved my mileage by a little over 2mpg on average, because I tend to do alot of city driving, where I don't need all the power and excess smoke. My city mileage is now up to about 14-15mpg... Just my . 02 and something to think about, if you don't need all the power all the time, like me. Oh, and sorry that this was so long