2 step on fuel injected cars

Ed Wright · 12-28-2009, 10:38 AM

Quote:

Originally Posted by art leong

Well Ed The motor that was pushing fuel past the rings, (the fast system was out of the car then) went 1.56 under (without reringing) with a ViPec Ecu. The fast people offered zero support for a unit that I had purchased new 2 years before. All they told me was to buy a new one
I guess I'm going to have to fix that terrible problem.

Art, if your na and it's doing that, your over fueling it. If so, try leaning it at the launch RPM and you'r likely to be faster. You evidently talked to the wrong person at FAST, as I have gotten people help with the older systems too. There are some very bright, helpful people there. I'm sorry you had problems, but if your pushing fuel past the rings on the 2 step, you still have something wrong.

That is a lot fo fuel. I wonder if the Lingenfelter 2 step is screwing with your ECU? If your battery is not grounded to the engine you might run a ground cable all the way to the engine. The biggest source of problems with EFI is grounds.

Heck, you may be as far under as the Caddy in Stock when you get it fixed.

4500 isn't very high, how big is your engine?

art leong · 12-28-2009, 11:42 AM

Quote:

Originally Posted by Ed Wright

Art, if your na and it's doing that, your over fueling it. If so, try leaning it at the launch RPM and you'r likely to be faster. You evidently talked to the wrong person at FAST, as I have gotten people help with the older systems too. There are some very bright, helpful people there. I'm sorry you had problems, but if your pushing fuel past the rings on the 2 step, you still have something wrong.

That is a lot fo fuel. I wonder if the Lingenfelter 2 step is screwing with your ECU? If your battery is not grounded to the engine you might run a ground cable all the way to the engine. The biggest source of problems with EFI is grounds.

Heck, you may be as far under as the Caddy in Stock when you get it fixed.

4500 isn't very high, how big is your engine?

The 2 step in the ECU works fine no problems with it. It just took the designer of the ECU a couple of months to get it together. I don't overfuel now. I can stay on the 2 step for 5 minutes (in neutral).. And the plugs look normal
Grounding isn't a problem The battery is in the stock location. And I have a large cable directly to the block and to a ground plate. In the 70's We were the first car to use the MSD 404 box So I know what you mean about grounds
The people at fast told me there was only one person that could help, when I talked to him I realized if I wasn't running a GM motor there was not going to be any help. After fighting with the unit for a while I found out they they had no knowlege of the grey box. They just bought the company name then designed their own box. A few guys on here were a big help to get the car running.
The 2 step was inline with the coil packs. not connected to the ECU other than that.
The converter in the car then stalled at 4500 It has been modded to go to 5000 now.
The motor is 151 cubic inches.
When I ran stock (2.04 under) the caddy would have been no problem.