ecu
Guest
Posts: n/a
ecu
I only have CAI but will be sending intake and throttle body to Onpol soon. Then 240 or 246 cams and after that headers and exhaust. Question is at what point if any do I need to upgrade from stock ECU? or can I wait until I hopefully do the NOS? Any help would be appreciated.
Super Moderator
Joined: May 2001
Posts: 11,851
Likes: 2
From: Rancho Palos Verdes, CA
Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
I would not bother with trying to upgrade the stock ECU. You would be better off with a Apex S-AFC. Properly dyno tuned, it should be good for another 5 Hp with ALL of the above mods you mentioned, not to mention a better running car.
Guest
Posts: n/a
Apexi web page $419.00 on E-Bay right now used "for a month" bid is at $230.00, but in Asia. If its the same it's cheap. Hey Ramdom at what point would it be time to get S-AFC? Onpol,Cams,Headers/Exhaust, or NOS? At what point does not having it become a liability?
Senior Member
Joined: May 2001
Posts: 1,436
Likes: 0
Before he went the psycho route like I'm doing smile.gif Onpol was using an S-AFC to tune his 440cc/min injectors + T3 turbo setup at 10psi. He was making around 220-230 at the tires at that point, which was enough to grenade the drive axle and differential when launching hard on slicks.
The S-AFC is a good idea on a car with more than a "few" bolt-ons. How many is the right number? I dunno, howabout when your next single mod exceeds the cost of the S-AFC?
A throttle body is ~$130. Intake manifold ~$170. CAI is about $200. Headers from HVE are bordering on $250... Having your exhaust replaced will probably be $350-450. Cams -- depends on where ya buy 'em.
One clarification that is needed: the S-AFC device is constantly on, and as such must be used with constant-on modifications. Nitrous is not a constant-on mod, you only use it during specific times. In this case, an S-AFC is useless for tuning.
The effective limitation is "How much can I simply FOOL the stock computer and be reliable and make power?" At some point, there is simply too much more going on than the stock computer could ever comprehend.
The S-AFC alters fuel only. Thus, if you need more fuel than 440cc/min injectors can ever possibly provide, you're past the point of the S-AFC fixing things.
There are a few people who are past that point, in which case a full Haltech install is the order of the day.
-Red-
The S-AFC is a good idea on a car with more than a "few" bolt-ons. How many is the right number? I dunno, howabout when your next single mod exceeds the cost of the S-AFC?
A throttle body is ~$130. Intake manifold ~$170. CAI is about $200. Headers from HVE are bordering on $250... Having your exhaust replaced will probably be $350-450. Cams -- depends on where ya buy 'em.
One clarification that is needed: the S-AFC device is constantly on, and as such must be used with constant-on modifications. Nitrous is not a constant-on mod, you only use it during specific times. In this case, an S-AFC is useless for tuning.
The effective limitation is "How much can I simply FOOL the stock computer and be reliable and make power?" At some point, there is simply too much more going on than the stock computer could ever comprehend.
The S-AFC alters fuel only. Thus, if you need more fuel than 440cc/min injectors can ever possibly provide, you're past the point of the S-AFC fixing things.
There are a few people who are past that point, in which case a full Haltech install is the order of the day.
-Red-
