Once turbo, injectors, fuel pump's in, What now? Options

[JoKeRkId613]

I'm almost done gathering everything for the turbo setup. I have a question tho. I'm going with either the SAFC-2 or the E-manage. I had no idea those things where like 200+. but yeah. I'm probably going with the Apexi cuz it has a display and the e-manage just seems to come with a CD and I'd rather tune real time than have to go to my pc. I'm guessing that's how e-manage works. but yeah. once my injectors and fuel pump and all that crap are in my car, how do i know to tune the SAFC so my car runs right? is that in the instructions or is it something i have to know?

[scothaniel]

an a/f ratio of 15? I am not all that knowledgable about the 7afte but that would blow a 3sgte. The ideal safe a/f ratio for the 3sgte is in the 11's.

a/f ratio of 15 is just above stoich (14.7), not harmfull at all. My stock 3SGTE ran between 11.8 at WOT and 19 at idle, and the 3S's run very rich. Best fuel economy is usually between 16 and 18 for cruising . 12's are best for making power under full boost.

Widebands are the best for tuning, but you can use a standard 2 wire (0 to 1 volt) a/f meter with the stock sensor to get you going.

[jgreening]

an a/f ratio of 15? I am not all that knowledgable about the 7afte but that would blow a 3sgte. The ideal safe a/f ratio for the 3sgte is in the 11's.

a/f ratio of 15 is just above stoich (14.7), not harmfull at all. My stock 3SGTE ran between 11.8 at WOT and 19 at idle, and the 3S's run very rich. Best fuel economy is usually between 16 and 18 for cruising . 12's are best for making power under full boost.

Widebands are the best for tuning, but you can use a standard 2 wire (0 to 1 volt) a/f meter with the stock sensor to get you going.

Idle and cruising are closed loop (no boost). If you pop a motor, its most likely going to be under a boost event. I stick by my statement that you should tune for mid to high 11's under boost. That will give you some comfort level.