GAMIjectors....

[Dave Underwood]

Time for my two cents worth.

1) As I recall, there is a slightly longer harness for the EDM760 to accomidate the 337 and the distance to the rear engine. The folks at JPI are good and will answer questions.

2) I installed Gami's a couple of years ago as part of a project to get the aircraft running smoother. They do make a difference and I can see that on my EDM760 on the EGT display as I lean. The engines start and run more smoothly, no question.

3) I also dynamically balanced both engines which also helped smooth things out a bit. Certainly there is much less rock and roll now. I figure vibration will be the biggest enemy as our aircraft age.

4) I tend to climb at the top of the green full rich, which as I'm in a turbo is important. In cruise I fly at 55% or 65%, generally slightly LOP. My experiences lean of peak are that it does save a bit of fuel, but not as much as I was hoping. That said, I have other friends that swear by it, but they are running bigger engines with greater fuel flow savings.

5) I suppose all things being equal, I save about 1 +/- gal/hour/engine and Ernie is right, it does take some management. It also takes some experience to feel comfortable with the process, but the engines do run smoother and cleaner.

6) Fuel around here (in the UK) is $8.00/gal or more which means a payback in less than a year (100 hours +/-). It also increases the safety margins on long legs and if you were in real trouble you could power way back and stay airbourne for many extra hours at very low power settings.

7) In summary, I figure it was worth it.

Regards - Dave

[hharney]

Dave
Thanks for the response. I talked with JPI and the person I talked to at Sun N Fun could not remember if there was a special need cable length for the rear engine. Sounds like I will need to make sure before I purchase in Oshkosh this year. I just installed the GAMI's last month and will be doing the JPI after Oshkosh. JPI has some nice incentives on buying at the shows. $300 rebate for the 760 + $300 rebate for the fuel flow option and 2 free probes of choice (I will choose the oil temp probes. It has to be purchased from a authorized distributor so I had 4 out of 5 at SNF shoot me a quote for the 760, 6 cyl, with fuel flow. Here are the results:

Gami $4908.00
Gulf Coast $5100.00
Sarasota Avionics $4535.00
Spruce $4816.70

Retail is $5895.00


Quite the spread but I will see how hungry they are in OSH. This is before the $600 rebate and the oil temp probes are $165 each.

Best price with rebate and the 2 free probes $3935.00