I gained a solid 15mph on my setup. Sunsation 288, Whippled 500 efi. I am replacing the short block as we speak, and doing some porting on the aluminum heads to match the Whipple intake better. Oh, I can't express to tune the engines with a dyno enough!!!!

I have 2 complete sets I would like to sell. Newest compressors (3hrs old) all newest snouts and upgrades. PM me if your interested.

Call Mark at Precision marine 504-469-7463 he can help you .

Whipple can supply the complete EFI systems with MEFI 4 controller or you can use aftermarket ECU and harness. All the hardware is included in the kits. We use the FAST ECUs, but it really comes down to what you are most comfortable with. You must have the MEFI programming software to do the MEFI 4, which we have, as does Mark at Precision and Tyler Crockett.

Sacred Ground,
I would not hesitate to purchase a Whipple. I have done over 12 quadrotors and many more singles. It is pretty much the only supercharger that I use.

Rick,
The only EFI that I use is the MEFI 4. Personally, I think it is the best. But, you must have the software to tune them (which I do) and they are not very user friendly like some of the aftermarket systems. Everyone has their own preference and there are much easier systems to use then the MEFI, but I think the added work in tuning a MEFI is well worth it.
Eddie

Question for you experts, I will need to 'tune' my engine once it is back together. Do I HAVE to send the computers back to Whipple? My engine guy is very familiar with this system but I think we are going to have a hard time getting into the computers now that Whipple has calibrated them. I think they lock the computers out don't they? Can we get into the computers ? It would be nice once the engine is on the dyno to tune it , rather than send the computers to Dustin along with the dyno sheets. Then try again....

Jeff,
Without the password, the only thing you can do is to erase the program and start over. I'm sure Dustin is not going to give his password out. You should call him to be sure it is password protected, or you can try to open it yourself to see, but it must be powered up. That can be tough if the engine is apart, but it can be done by hooking up the harness. Hope this helps, Eddie.

So, the idling issues and over all driveability are governed by the fuel injection system the engine builders choose.

EFI, MEFI4, Accell, etc.. Each is probably different in many unique ways.

I thought that maybe Whipple had its own EFI system that was tunable that they supplied with the blowers. Would add a lot more consistency to applications.

I'm sure Dustin password protects the ECM. If you have a dealer that you purchased through that is doing the tuning and has the software, Dustin may send him a copy of the file. He's done that for me before. Then he can fine tune it from there using a wide band 02 sensor.

My computer is protected, and I respect that. I just wondered if there was a way around it to make this easier and WAY quicker fo me. I guess I'll just send the computer with a dyno sheet. Trial and error.