 Stand alone injection? Opinions? For /6 w ITB, help picking EFI system |
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| TorqueJunkie |
 Jun 3 2010, 04:49 PM
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Newbie  Group: Members Posts: 48 Joined: 25-May 10 From: Baltimore, MD Member No.: 11,760 Region Association: None  |
I am in the process of rebuilding my 2.4 engine with 2.2S pistons, S cams, and am going to install TWM individual throttle bodies. I am looking around for some fuel and ignition systems for this engine. I have looked at most of the ones out there, but not sure what works best. On some of the other forums, there is a guy running the Megasquirt(latest version) with good results. Another guy is using Electromitive. I have everything except for the control module. What do you guys use on the flat 6 engines? I do not want to spend a ton of money either. I want something reliable. I hated my carbs.
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| jpnovak |
Jun 15 2010, 08:52 AM
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They call me "Nanoman" Group: Members Posts: 231 Joined: 26-August 09 From: Austin TX Member No.: 10,736 Region Association: Southwest Region |
Yes, you will need to tap each of the six throats and attach a vacuum line to each. These must then be attached to a large volume vacuum accumulator. The larger the vacuum plenum the better signal damping you will have.
The issue with a high overlap cam is that the reversion pulse at low speed will be quite large. This pressure wave gets sent to the MAP sensor on the ECU and reads as an erratic signal. The new MS codes allow for sampling rate changes such that you sample at a crank position outside the pulse. This essentially puts them out of phase and cleans up the signal. There are many tricks you can play that help tune around the reversion problem with high overlap cams. If your heads are out getting a rework ask them to drill and tap Head #3 for a Carrera type CHT sensor. This can interface directly to your EFI and will function as a warm-up sensor. The response is much faster for fueling requirements than measuring oil temp. You can also epoxy mount a thermistor in place for the same function. If you plan correctly and understand what you are doing the EFI conversion is a wonderful thing. I converted my early car from CIS to webers on a 3.0. It is no secret that the webers outperform CIS in every way possible except gas mileage. The jump from webers to ITB-EFI was similar in magnitude as the first induction swap. The key is in the tuning and setup. Of course, now I have a new motor (3.2SS) that puts out nearly 300HP. I still get almost 24 mpg on highway cruising. Not bad for a psuedo-race motor. |
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Posts in this topic
TorqueJunkie Stand alone injection? Opinions? For /6 w ITB Jun 3 2010, 04:49 PM
underthetire I don't have a 6, but I do have megasquirt. It... Jun 3 2010, 05:02 PM
TorqueJunkie
I don't have a 6, but I do have megasquirt. I... Jun 3 2010, 11:35 PM ottox914 Check out SDSEFI.com. It is as advertised, simple... Jun 3 2010, 08:49 PM ottox914 I'm surprised you had that experience with the... Jun 4 2010, 07:18 AM TorqueJunkie
I'm surprised you had that experience with th... Jun 4 2010, 02:30 PM puff adder Check out the Electromotive Tec III system. I was ... Jun 4 2010, 09:16 AM Randal I used Link on my 2.4 fuel injection motor.
Works... Jun 6 2010, 01:22 PM J P Stein
I used Link on my 2.4 fuel injection motor.
Work... Jun 6 2010, 01:24 PM Randal
I used Link on my 2.4 fuel injection motor.
Wor... Jun 6 2010, 02:36 PM jpnovak I have been running a Megasquirt system for almost... Jun 14 2010, 01:21 PM TorqueJunkie
I have been running a Megasquirt system for almos... Jun 14 2010, 10:03 PM TorqueJunkie
Yes, you will need to tap each of the six throats... Jun 15 2010, 10:31 PM TorqueJunkie Do you have a picture of where it goes in the head... Jun 15 2010, 10:34 PM jpnovak Any place that knows Porsche heads should be able ... Jun 16 2010, 11:23 AM Britain Smith Have you taken a look at the EFI systems from Roth... Jun 16 2010, 04:09 PM jpnovak Those are nice! Jun 17 2010, 10:17 AM sean_v8_914 you could easily sell those S cams. since the cam ... Jun 30 2010, 10:56 AM Randal If you want a system that works, call Matt Lowranc... Jul 5 2010, 02:40 PM Randal
If you want a system that works, call Matt Lowran... Jul 5 2010, 02:42 PM |
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