Has any1 had any reliability issues? I'm debating whether to go VAFC (for now) or wait and go for the Hondata s200b? There is a big price difference. I know u can't adjust timing with the VAFC but is it good enough for now?

How much boost is safe to run with the hack?

I'm running a del sol B16a with the Max Rev Kit....

L8R

 

Wait and save for the S200b

 

i'm running the hack

right now i'm boosting upto 7PSI

only problem i have with it is the jerking when u left off the gas then press it back down

 

I'm running the afc hack and it works great...I put down 280 whp on the dyno and the a/f was perfect. If I could go back I wouldn't do anything different

 

Im running the poor mans hondata (HACK) and love it. but like some one said above it does tend to "BUCK" when you let off and get backl on it but other than that it it is awsome. I run 12psi on my SOHC Y8

 

The bucking is the only thing that drives me nuts.

 

anybody know what people with the hack can do to prevent that?

 

nothing, its unaviodable

Rob

 

 

Since your on a budget you may want an alternative to the VAFC hack at less cost. Try the SMC+ It has some key features that make it advantageous over the VAFC. See the SMC+ website below for details.

SMC plus

 

The hack works great, besides the bucking. Just be sure to give yourself a healthy retard on the destributor.

 

SMC
AFC
Saying "The Hack"

 

lol i was using the Vafc back in the day and had great luck with 550 cc injectors a p30 ecu with a top fuel program...i successfully made 400whp with it ..

 

Why does the "bucking" occur exactly??? Is it because the injectors suddenly stop spraying gas into the cylinders???

 

i am running a b16a, greddy GSR turbo kit, vafc, rc 440's @7 psi.

car jerking when letting off the gas


[Modified by black92si, 11:01 PM 1/28/2003]

 

I will also be using the "Hack" until I go with the AEM EMS.

 

also runnin the vafc hack, runnin 9psi

 

save for true Engine Managment but if you cant wait get the hack...:shrugs:

 

haha, i though i was the only with the bucking problem because it was doing that even before the hack.
you should just run the hack, you could alway sell the vafc after you save up enough money for the hondata. i'm saving for EMS.

 

Honestly, I would have bought and used the SMC if it were available when I first did my turbo until I could afford the Hondata. Now I've got Hondata, and I can't wait to "finish" my car, have it tuned, and finally have a car that runs like it's supposed to (although 206/184 isn't bad using the hack @ 9psi on an SOHC).

 

Hey KC GSR,

Can you fill us in on your fuel setup and afc settings?

 

I don't buck.

The bucking is caused by advanced ignition timing under boost associated with MAP sensor based boost hacks. My CRX even did it once or twice when it was still NA and cruising around on the 450cc's and AFC - feels more like hesitation then. Once you have your ECU chipped with ignition maps to compensate for the way they are stretched, the bucking goes away.

Does that answer your question, Del?

 

I just bought a hondata s200. Do you want to buy my vafc 150.00?
IM me or email me


[Modified by b16matt, 4:24 AM 1/29/2003]

 

Just to touch on the Bucking issue, i believe that it has something to do with not going into open loop soon enough, or going back into closed loop at the appropriate time.

Rob

 

Badda-Bing. If you mess with the MAP sensor the stock ECU isn't as reponsive so when you let off it gets a little confused before it switches. The hack actually delays your MAP sensor responsiveness. When ever you start adding extra circuits into the sensor path, and the timing in the ECU is adjusted for it you're going to have problems.

J. Davis is right on this you should just go with Hondata and chip it or get him or Filetofit to make up a chip for ya. All hacks have their downfalls.