Aftermarket FI options for Type 4 motors 2056 or larger, Who here has gone this route and is it worth it? What options do we have? Options

[DRPHIL914]

i started looking into this 2 years ago when i was planning my rebuild motor after the drpped valve seat on the OEM motor.
I ended up building a nice 2056 with increased compression, brand new heads, counter balanced crank and of course the cam is performance minded as well.
to start i installed the d-jet and later last year i added a 50mm bored out stock throttle body from Tangerine/Chris Foley. Yes this helped a great deal, but we are still limited due to the d-jet and the MPS. So there are a few people out there that make ITB( independant throttle body) that could be used.
One is Jenvey, and i see that PMB is carrying those. It looks ike they are mated to what ever IDF intake manifold you choose. there are 40, 45, 48 options. mated with 350cc injectors.
I am wondering other than the CB performance stuff that has been available for a while, others have come to the table, who here has played around with this ? over the years ive read a lot on others using the megasquirt and micro etc and it seemd they were very difficult to tune and set up with lots of problems, trial and error.

I am looking for advice on what to stay away from and what are the pitfalls and mistakes we can avoid before jumping into this.

Look forward to some input, thanks!!

Phil

[bkrantz]

I have the Dub Shop kit on my 2056. As delivered it was easy to install and set up, and it started and idled on the first attempt with the default Type 4 tune file Mario included. After one dyno session I consider the tune 90-95% complete. I hope to get the remaining 5% this summer as I learn how to tweak the Megasquirt settings.

[rgolia]

I have the Dub Shop kit on my 2056. As delivered it was easy to install and set up, and it started and idled on the first attempt with the default Type 4 tune file Mario included. After one dyno session I consider the tune 90-95% complete. I hope to get the remaining 5% this summer as I learn how to tweak the Megasquirt settings.

Did you have carbs prior to installing the dub shop kit? If so, what are the benefits. That is not a cheap kit, but I am seriously considering it.

[bkrantz]

I have the Dub Shop kit on my 2056. As delivered it was easy to install and set up, and it started and idled on the first attempt with the default Type 4 tune file Mario included. After one dyno session I consider the tune 90-95% complete. I hope to get the remaining 5% this summer as I learn how to tweak the Megasquirt settings.

Did you have carbs prior to installing the dub shop kit? If so, what are the benefits. That is not a cheap kit, but I am seriously considering it.

No, my non-running engine had the original D-jet, but with lots of questionable components and beat up wires and connectors. I rationalized the price of the Dub Shop kit with guesses how much I could spend to repair the D-jet. Plus I wanted the programability (and the sexy ITB stacks).

I think I am getting more power out of my build, and smoother running. The biggest flaw in the Dub Shop kit is the lack of a separate cold start circuit. Not too important to me, but could be for some.

[rgolia]

I have the Dub Shop kit on my 2056. As delivered it was easy to install and set up, and it started and idled on the first attempt with the default Type 4 tune file Mario included. After one dyno session I consider the tune 90-95% complete. I hope to get the remaining 5% this summer as I learn how to tweak the Megasquirt settings.

Did you have carbs prior to installing the dub shop kit? If so, what are the benefits. That is not a cheap kit, but I am seriously considering it.

No, my non-running engine had the original D-jet, but with lots of questionable components and beat up wires and connectors. I rationalized the price of the Dub Shop kit with guesses how much I could spend to repair the D-jet. Plus I wanted the programability (and the sexy ITB stacks).

I think I am getting more power out of my build, and smoother running. The biggest flaw in the Dub Shop kit is the lack of a separate cold start circuit. Not too important to me, but could be for some.

@bkrantz

I am seriously looking at the dubshop system. This car is like a family member having it since new, so I will do my best to swipe the credit card with out swallowing to hard. The engine was rebuilt a few years ago at Tangerine Racing, 2056 with new AA heads done by Hoffman. It runs great, but cold and warm starts suck and the fuel smell is getting old. Right now it is running with 44 webers and there is no existing FI stuff left in the car as far as I know.

So is this the place that you started and how much time did it take to install and tune. Please provide details. I can deal with the spend but I cant deal with frustration and not being able to drive the car because I get the thing dialed in.

[bkrantz]

I have the Dub Shop kit on my 2056. As delivered it was easy to install and set up, and it started and idled on the first attempt with the default Type 4 tune file Mario included. After one dyno session I consider the tune 90-95% complete. I hope to get the remaining 5% this summer as I learn how to tweak the Megasquirt settings.

Did you have carbs prior to installing the dub shop kit? If so, what are the benefits. That is not a cheap kit, but I am seriously considering it.

No, my non-running engine had the original D-jet, but with lots of questionable components and beat up wires and connectors. I rationalized the price of the Dub Shop kit with guesses how much I could spend to repair the D-jet. Plus I wanted the programability (and the sexy ITB stacks).

I think I am getting more power out of my build, and smoother running. The biggest flaw in the Dub Shop kit is the lack of a separate cold start circuit. Not too important to me, but could be for some.

@bkrantz

I am seriously looking at the dubshop system. This car is like a family member having it since new, so I will do my best to swipe the credit card with out swallowing to hard. The engine was rebuilt a few years ago at Tangerine Racing, 2056 with new AA heads done by Hoffman. It runs great, but cold and warm starts suck and the fuel smell is getting old. Right now it is running with 44 webers and there is no existing FI stuff left in the car as far as I know.

So is this the place that you started and how much time did it take to install and tune. Please provide details. I can deal with the spend but I cant deal with frustration and not being able to drive the car because I get the thing dialed in.

If you read through my build thread, you can see details about the mechanical installation, setting up the fuel lines and wiring, how I mounted the ECU, the pre-start setup (including tune software), the initial start and home tuning, and then my session on a dyno. That all happened over about 6 months (with other build stuff at the same time). I would guess it could all be done in about a month.