No one is as disappointed as I am. I have a years worth of frustration and considerable $$$$ invested with no results. I would never use the relay board again from MS as it is a piece of sh$t. I am disappointed in the quality of the PLX O2 controller, this car has about 1000 miles on the EFI setup if that many and the O2 controller is dead. If I would have known a year ago that it was going to be this hard I would have bought brand new PMO's and would have enjoyed driving my car the past year. I am willing to admit that some of the problems are my fault because I did not teach myself to be a EFI tuner but I don't want to be a EFI tuner. Good luck to anyone going down this path..................hope you have local support.

Rarly sez:

EFI is WAY overrated on this board. A lot of money for nothing and a nightmaire to tune. CIS is a good system when the components are new or rebuilt. All systems suck when they are old and worn out, even EFI.

But that may not be constructive advice for you, only my opinion.
If you are in love with the idea of EFI and ITBs you should ship your car to an EFI tuner that has proven experience in the EXACT system you are using. Yes it will cost you a fortune. Knowbody seems to include the cost of tuning in their discussions of how great EFI is. To do it right you need multiple dyno runs and a ton of time spent tuning for an infinite number of variables."
***********
Controversial statement, yes - BUT AS OF NOW, SO TRUE.

After hearing the HUGE expense and tremendous time it takes to get an EFI setup to the point of at least running......no thanks, not now, not even for my 930 which could use the accuracy of EFI.

Just WAY too many:
"What parts fo I use to cob this thing together?"
"it doesn't work right"
'I am so frustrated I hate the car"
"My EFI for my 930 cost $12,000 and runs like *****"
"I am still tuning at $98 an hour"


etc, crap -- ESPECIALLY for a turbocharged engine.

One cannot expect an "easy bolt on kit", but fer chrissakes the EFI thing is a royal pain in the ass.

Just not worth it --- in 2007. Maybe in time...

Richard, hate to hear the bad news but understand...

My 2 cents on EFI/mod in general - I learnt from day 1 that once you wander off the dealer stock path, you are pretty much on your own. Either find a mechanic that you trust & can deal with your mods, or be prepared to do lots of research & DIY frustration to get everything works :(

Specifically EFI - I don't think there is a 100% plug-&-play system. Whether its Motec or Megasquirt - on Pelican alone, we have heard great & bad stories. I remember talking to a few shops who offered "bolt-on systems" - in the end, everyone kinda suggest shipping them the engine.

Imagine buying a set of PMO or ITB setup and try to "tune" it yourself without any tools or local mechanics to help...

There is a light at the end of the tunnel. I have a excellent local mechanic and we'll figure out my best path. Yes it will take some more money but hey it's only money. My mistake was thinking I had the ability to do this on my own and that was a poor assumption. Oh well sh$t happens. I am guessing we will go the way of the carb but we'll see. I'll let you guys know what happens.

I just stumbled into this thread and thought I would share my thoughts. I am in the process of tuning a Megasquirt 1 running "extra code". I won't list all of its functions, but if you haven't looked at this yet it is amazing. The victim is my 2.3L Ford in a Lotus Super 7 replica (all scratch built, no kit, no pre-made glass parts. etc).

To say it has been a learning experience is an understatement. Three key pieces of advice:
1. Read ALL of the documentation and UNDERSTAND it. There is no way you can tune something that you know nothing about. There are a ton of variables to get set.
2. MS is a do all for everyone system. This has advantages and disadvantages. Advantage is that it can work for everyone; disadvantage is that you must know what you need and how to integrate it.
3. MS is nearly free. Documentation has been created by voluntary contribution and is sometimes confusing. You get more than you pay for with MS, but it is not a Motec, Holley, etc.

I have had my frustrations... Incorrect/unclear documentation which was updated 3 days after I built mine. I spent hours reading schematics and tracing circuits. All in all, my car runs pretty good. I have to ferret out an unwanted accel issue that is most likely a jittery TPS. I took me a few afternoons to get the accel and warm up enrichments correct. My thoughts were to do this car first, then do a ITB on the 911. I feel confident that this experience will greatly simplify the next install, and at MUCH lower costs for catastrophic failures.

Bottom line is that it works. The Tbitz system proves that it will work on 911s. However, if you create your own system be aware that you must posses some knowledge of EFI. I would not suggest it for your first automotive hands on project, but I would use it again any time.

Has anyone fitted up a set of GSXR throttles yet? I have seen some discussions of beginning installs, but nothing seems complete yet.

If the car now runs like crap have you checked the reset which is shown on the Megatune opening page in the bottom right hand corner. If there is a reset shown there you probably have "noise" in the system. I fitted a filter and stopped the resets from happening as each time I started the car and switched on the computer every setting had changed. You should be able to go back to the settings that had the car running properly ( assuming you saved them) when Jim the MS guru left.
Good luck.

Richard thanks for the advice but the EFI is coming out this weekend.

just wondering if the MS got yanked or not?

Yanked and sold long ago. And he's very happy with his carburetors.

I have Autronic SM4 with 500R ignition and I have to say that the road to a successful conversion is a long road, but it's worth it in the end. The key as others have mentioned is to read the manual thoroughly and understand it AND find the best tuner for your specific application and have them do the initial tuning and PATIENCE. I cannot overstate the importance of patience- you WILL have ups and downs during the work and a good attitude is paramount (easy for me to say).

While your tuner is tuning- learn as much as you can about what he is doing and why. There is a reason that there is a University for EFI- it's pretty complex. But once you get the initial tune right it's very fun to work with and it's all worth it to me.

Just my opinion: There are those that advocate staying with CIS and torsion bars in the older cars and there is nothing wrong with that. But a friend of mine who restores Austin Healey cars met Donald Healey the founder of the company and he asked Donald about his thoughts on people resoring AH's to their original specifications for concours duty. Donald thought they were out of their minds for doing such a thing. He said "with all the technological advancements today, people would be crazy to restore their cars the original factory specifications- there are so many better options today."

I think the same idea applies to our cars. There are so many options out there today for engines and suspensions. Yes they are a bit pricey still, but the technology is out there- I say USE IT.

It's been almost 14 months since I put on the PMO's. She's been running damn near perfect the entire time. Did a PCA autocross today and I was fastest in P3 and was holding my own against Boxsters,Caymans,993'S,996'S so I am VERY happy with the carbs.