EFI Conversion - 4 Cylinder GTV - GoTech Pro, Coil-Packs & ITBs;

[junglejustice]

This happens to be the Redline/Weber coils, but they are basically a Miata coil... The work well - don't know what the charge-time is but it is going to be much faster than running a stock single coil on a V6 - I can tell you that much! Point is that most any coil will be fine.

You can convert the 4-banger Alfa to a COP setup, but why. oil-packs in general are sensitive to heat and vibration - why put them on the motor? On all of the V6 conversions that we do, we typically go remote fire-wall mounted (even with 24 valve motors that came COP - I go remote VW VR6, Alfa 155, Mitsubishi Pajero, Kia Poong Sung, Saturn - anything.

Yes, the GoTech Pro and Pro-X models will drive COP.

Any way - we are going to be moving away from the modified stock pulleys. They work with a really strong pick-up but not with weaker pick-ups (they start to loose resolution at higher rpm - 4-5K rpm on up - and start popping! The stock Alfa 164 and Twin Spark Bosch mag. pick-up can lift a 17-19mm wrench, some of the smaller after-market ones won't even lift an 8mm wrench...! - Best way that I know to compare!

With the stock pulley notched 60-2, you have to leave some solid continuous edge for the V-belt and at higher rpm, the sensor sees that as a solid line.

Group 2 spent the money now and paid a shop for a custom CnC pulley with the correct TDC marking, 60 teeth cut all of the way through, (powder-coated etc.) They have 10 in stock now! (We were going to go aluminium, but we could not find an aluminium magnetic pick-up... )

[CDM]

Is it mandatory to put these conversions on a dyno for tuning? Just wondering what the total package costs would end up to be, more or less.

Pro kit $900 includes what ?
notched pully and sensor= $?
Throttle bodies=$? (aside: performance advantage over Spica bodies?)
injectors, coils, wires, etc.
fab a coverplate or two,
install at home,
Dyno tuning =$?

What has Brian's experience been for past 6 months? (Is that right?)

Thanks
C.

[junglejustice]

For 900 bucks you get the Pro ECU, a complete, custom, plug and play wiring harness (not just a roll of wires and packets of connectors.) You also get a starting map and all of the assistance from me to get going - just ask around.

The harness already has an air-temp sensor on one of the tails, as well as Alfa/Bosch "AMP/Molex" quick-release connectors for the rest of it that simply plugs right in to a stock Bosch injector, on to an Alfa water-temp sender, in to the stock Bosch crank-angle sensor on a 164 or a twin spark, etc etc.

You can run MAP (manifold absolute pressure), TPS (throttle position sensor), or a blend of the two. You can run boost, launch-control etc and you have a variety of inputs and outputs to drive things such as an after-market tach, and external shift-light, fan-relays, fuel-pumps etc., as well as to receive input from a wide-band lambda sensor for example, water-temp sensors as mentioned etc.

You also get the tuning software to load on to your laptop. That is a big difference from say Squadra, UniChip, Bosch etc where they don't give you access to their tuning software (as a retail customer) and yes; you need SOME dyno-time.

Don't be intimidated by that - the dyno is no big deal. With all of the maps that we have floating around out there now, it is pretty simple to get going and then it just takes maybe a couple of hours at a dyno to get dialed in for local fuel and altitude as well as the mechanical efficiencies of your individual motor (cams, ports, compression-ratio, exhaust etc all plays in to it.)

The new custom 4 cylinder pulleys from G2 is around 180 USD if you have them do a conversion and you buy other parts and about 225 USD if you just buy the pulley. (Not 100% sure right now - not my pulleys - I can check though - buzz me later at 425.941.4747.)

The 4-set of SPICA ITBs are actually nice and big once you remove the tubes inside. Still the TWM Redline Weber ITBs (2 sets of doubles) looks much nicer, but they run somewhere north of a grand -1,200 bucks. The 4 single individual GoTech ITB units can be stacked 1-2-3-4-5-6-8-10-12 cylinders - any configuration - and will work with any adapters. They run about 1500 for a set of 4 including linkages etc. I have a set read to ship.

Email me off-forum and I can price a kit for you with ITBs, ECU, harness, FPR, crank-pulley or dizzy-setup, coils, injectors, rails etc. Hair Salon | Regina Celeste or 425.941.4747 in Seattle.

Brian's car was an Alfetta Coupe that was done with a single coil and a Hall-sender with a GoTech Standard and a Spica manifold - the budget way to go. That car runs well, but he sold it. This gentleman's plumb ' 73 GTV above runs the GoTech Pro with the Redline Weber TWM ITBs and the 60-2 crank setup - just like Joe's ' 74 at G2...

[CDM]

Thanks for the info.

[Grant]

John, thanks for doing the write-up. I learned some more by reading this.

[junglejustice]

Why are we not able to make edits to posts in this thread - what's with the permatex/permalink bs...?