Fast ez-efi 2.0 the elephant in the room

[Fastrun72]

I can't help but notice all the problems people are having with the new system, including myself. I just received the new copy of Super Chevy and see that they have done a 6 page tech install on the old Fast EFI 1.0 with no mention about the 2.0... But 5 pages before the article there is a full page ad from FAST all about their great new 2.0.... It seems that FAST is in damage control already and nobody (except here) wants to admit there are some real problems with the 2.0 version, which ain't cheap!!! I called them on Friday to check on the status of my unit which they have had for over 2 weeks now and was told they have no news, nothing... So far their communication really sucks, they got my money and now I am nobody to them!!! Any thoughts anyone????
:ripped:

[Bigblue73]

Take the articles for the information that they provide since it was more than likely written 4 - 5 months ago. The magazines have to "schedule" the tech articles based on the issue content. I ran into this with an installation article for a B-Body TKO for Mopar Muscle. I took almost 7 months to go to print.

Sorry to hear about the communication with FAST. Just keep trying and remember it is the holidays and folks are off on vacation.

[CTSV]

I am having massive tuning issues with my system as well with inglese 8 stack. Their support is horrible i wait 40 min to get a tech on the line who stumbles and said he does not know what i should do. fYI guys the MsD atomic is way better and they have real,support i wish they made a multiport kit. My issues are now going on for 4 months. I almost want to charge back the payment and ship this system back.

[howehot]

I have FAST EZ EFI and XIM running my LS1. After 2 years of frustration its being replaced with a GM ECM and harness. I've gotten zero support except for try this or that. West Bend Dyno can't even get it to fuel correctly with the correct parameters. My LS383 is now 502ci and programmed super rich so the FAST has to pull fuel out instead of adding to get close to a proper afr. The XIM cannot achieve a proper timing curve so peak rpm is at 5745 and not 62-6300.

[CTSV]

I have FAST EZ EFI and XIM running my LS1. After 2 years of frustration its being replaced with a GM ECM and harness. I've gotten zero support except for try this or that. West Bend Dyno can't even get it to fuel correctly with the correct parameters. My LS383 is now 502ci and programmed super rich so the FAST has to pull fuel out instead of adding to get close to a proper afr. The XIM cannot achieve a proper timing curve so peak rpm is at 5745 and not 62-6300.
We should round up enough pissed of users and file a class action suit against them. I feel your pain. And im sure your at a loss all around.

[Mr Nick]

Sorry to hear of all the troubles, my EZ-EFI v1 has been trouble free except a couple small hurdles during installation. If/when I do EFI again on another car, I'll likely go to Holley do to additional features.

[Fuelie Nova]

I gotta say I just installed a new Holley Terminator system and it went flawless. No problems and engine runs good. I used to run FAST XFI, had a problem on a long haul trip in Indiana a few years ago and got stuck at a rest area with a problem because fast could care less about helping me. Their support sucks, Sold it on ebay and went to a carb for a couple of years until my blood pressure went back down.
Holley has been great with helping and the fact that they give you a free update to a HP ecu makes it a no brainer for me.
Tom

[uxojerry]

I have a FAST 8 stack with no problems but it came as a crate motor. I think the 2.0 problems are people trying to link ignition timing into the system. It advertises that it can handle timing but I am skeptical. Im willing to bet that the 2.0 will work best if timing is done manually/separately. Most of the systems advertise that no fuel return line is reqd, but most do not work properly without a return line. Ive also heard the system is very sensitive to the proper location of the 02 sensors. Ive read threads where the MSD ignition module cause the computer to malfunction and was fixed by relocating the MSD box away from the system.

It seems to be a case of over-hyping some features that can only work if an expert does the installation. It works great in all of the magazine articles, lol. I want to use the 2.0 on a BBC but I am waiting to get more feedback. I dont want a bunch of features, and would rather have the 2.0 hardware with the 1.0 software. I want the 1200hp fuel capability and the mini-computer to control fuel/air mixture only.

[Auto Rod Technologies]

I was thinking about getting this for my truck, I may have to wait a little while now, I prefer to let the bugs get sorted out before I start messing with things.. Any other reviews on the Holley system?

[hifi875]

holley system works great!

[Bygblok]

I have the original FAST EZ-EFI on mine and it had a bad tps right out of the box. I'm thinking about just replacing all the other sensors as well with GM parts and getting rid of the cheap, Chinese crap they put on it new. Since I have a decent base tune on it the car seems to run fine down the road but when I first start it cold the thing is so fat you expect it to look like an old B52 going down the road leaving black smoke everywhere!! Once it's warm it seems to have an inconsistent idle surge.....some light it surges, others it doesn't and there's no real data to support why. Thinking it might be the cheap China brand MAP sensor.....who knows.... I won't do it again though.

[Mr Nick]

Once it's warm it seems to have an inconsistent idle surge.....some light it surges, others it doesn't and there's no real data to support why. Thinking it might be the cheap China brand MAP sensor.....who knows.... I won't do it again though.

Is your timing fluctuating at idle speeds? I set my timing to not advance till 1,200 so it's stable at idle speeds of 850.

[Bygblok]

Is your timing fluctuating at idle speeds? I set my timing to not advance till 1,200 so it's stable at idle speeds of 850.

timing is dead set with no vacumm on it now Nick but I still get the surge. I even plugged all the vacumm ports to my AC system to ensure there's no leaking and it still has an intermittent surge. Idle with it is somewhere between 750-800 when steady and even in gear with my 2700 converter. Not sure what my vacumm in hG is but it should be well above 10 inches. Motor is a 350sbc, around 9.5 to 1, dart iron eagle heads with 200cc runners, dual plane intake, camshaft is .512 at the valve with 234 on the duration, 114 lc and it's a hydraulic roller. I'm happy with the motor other than some lifter noise and it runs decent but just not what I expected with a large sum of cash dumped in to the EFI. Maybe I expected too much or just haven't figured it all out yet. I'm usually pretty good with this crap!!! lol

[regal454]

Any other reviews on the Holley system?

I have the Holley HP EFI system (550-603) in my Camaro with a 6.0 LS. Holley's tech support has been great. They also have a forum online that has been very helpful in answering my questions. The Holley system is very user friendly. My tuning experience before this install involved using a vacuum gauge and a timing light so this was my first fuel injected HotRod. If I had to buy another EFI kit it would definitely be the Holley system. I am very pleased with it.

[Hammered]

I don't know about FAST, but my Accel has standard PID (proportional-integral-derivative) parameters that could possibly lead to your problem. Surging would be typical of to much proportional and not enough integral and derivative. Basically, the system keeps over correcting.

On OEM cars, surging can be caused by a bad TPS so I would check that too (maybe check that first).

[72BBSwinger]

Sold my Fast system and am putting a MS3 on my Hemi. Seems they're just trying to keep their head above water imo.

[howehot]

GOODBYE FAST EFI. You have sucked since day one! I have dyno proof your system doesn't work.

https://static1.pt-content.com/images/pt/2014/02/IMG_20140206_134927_365_zpsa3c33d16-1.jpg

[Bygblok]

GOODBYE FAST EFI. You have sucked since day one! I have dyno proof your system doesn't work.

https://static1.pt-content.com/images/pt/2014/02/IMG_20140206_134927_365_zpsa3c33d16-1.jpg

does FAST ever SEE this negative stuff and if so...do they give a rats azz? You'd think for the money they gouged us all for you could at least get answered...or a reach around!!!

[GNon18s]

GOODBYE FAST EFI. You have sucked since day one! I have dyno proof your system doesn't work.

https://static1.pt-content.com/images/pt/2014/02/IMG_20140206_134927_365_zpsa3c33d16-1.jpg

Looks like an expensive headache?

[old66tiger]

My Ez 1.0 multiport has been pretty reliable. I bought it fro Richard Nedbal and I had some minor questions that he handled for me. He is a pretty smart dude.

[howehot]

My Ez 1.0 multiport has been pretty reliable. I bought it fro Richard Nedbal and I had some minor questions that he handled for me. He is a pretty smart dude.

Have you ever put it on a dyno and got some real numbers? This is how I discovered my issues. Super lean at wot. The FAST programmer is slow and only reads to 14:1. I was at 19.5:1. FAST said factory injectors were to small. Bought 60lb units under their recommendation. Took it down to 16:1. The timing curve with the XIM is also problematic. Can't get the needed timing above 5700 rpm killing the top end. For drivability we sacrificed the top end for the midrange. FAST is very poor at trouble shooting their so called plug and play self learning EFI. I can it a retard.

I lost my first motor due to a bottom end failure that was never pinpointed. May have been the lean issue it was run under without my knowledge. Why doesn't FAST offer a handheld that will datalog with speed and accuracy. I think it's so you can't found out the extent of the issues.

[71RS/SS396]

Have you ever put it on a dyno and got some real numbers? This is how I discovered my issues. Super lean at wot. The FAST programmer is slow and only reads to 14:1. I was at 19.5:1. FAST said factory injectors were to small. Bought 60lb units under their recommendation. Took it down to 16:1. The timing curve with the XIM is also problematic. Can't get the needed timing above 5700 rpm killing the top end. For drivability we sacrificed the top end for the midrange. FAST is very poor at trouble shooting their so called plug and play self learning EFI. I can it a retard.

I lost my first motor due to a bottom end failure that was never pinpointed. May have been the lean issue it was run under without my knowledge. Why doesn't FAST offer a handheld that will datalog with speed and accuracy. I think it's so you can't found out the extent of the issues.

Dan, those 60 lb injectors are too big for your engine, 42 lb injectors should handle it just fine. The 60's could cause you some tuning issues at idle, just keep it in mind if you have problems. I'm still using the stock LS7 injector in mine although they are at the limit of duty cycle.

[old66tiger]

Real numbers? Like horsepower or AF ratios? No, most of my tuning comes from the street. We don't have too many chassis dynos around here and the ones that are, want to breed you for all that you got.

I have an Innovate LM-2 that is connected to a Speedhut in-dash wide band O-2 meter. The unit is calibrated and the wideband confirms that the EZ settings are just about dead nuts on. The FAST dashboard responds very quickly and I don't see much of a discrepancy. I also have data logging capabilities in the LM-2 which makes up for the lack of such with the FAST unit. IIRC, I have the FAST unit set it to 11.8 for WOT and when I hit the gas, it goes to 11.5 ish on the LM-2 and holds steady until I let off for a shift. My only complaint is that the EZ system bounces around too much at idle and there is no control for timing. Data logging would be nice, but the wideband in the dash gives me a pretty good idea what is going on. Much better than a carb.

I had a friend that had a Holley Avenger EFI system and that system was very poor at cold start and idle. He screwed around with that system for quite a bit and never got the bugs worked out before he finally sold it. He had wished he would have stuck with a carb. Have you noticed that the new terminator unit is now using a throttle body that is much like the FAST unit?

My experience with the FAST system is that it is very good at cold start and the AF targets are met very quickly under most operating conditions. Not sure what problem that you had, but if you were running that lean and the handheld was showing that you were running lean, there were other issues. If the hand held said you were fat when the engine was lean, then that is definitely a problem with the unit. IF you had been running that lean, the plugs would have been bright white and it should have pinged like a bag full of pin balls. I always pull plugs a couple times per year to look things over.

If I were to do it over, I would consider the Holley HP EFI. The other units don't seem to offer up much more than what I already have.

[Ron Sutton]

Real numbers? Like horsepower or AF ratios? No, most of my tuning comes from the street. We don't have too many chassis dynos around here and the ones that are, want to breed you for all that you got.


I hate when that happens. :lol:

[Drago]

This is an old thread but I have to share my issue. I have a 73 Challenger with a 408 Tri-Star Stroker and FAST EZ 2.0. Since new it had hesitation under load that would come and go. I tried different ECU's, FAST support, two different builders took a crack at it, countless hours of my own trying to diagnose it. It would run great for months, then it would show up and progressively get worse. Then you park it for a week and it runs great again. I ended up replacing / upgrading several items including the headers thinking there was a leak throwing the O2 sensor off (FAST support idea). I moved the fuel pump to the tank and rerouted it... two builders thought this was a good idea. Finally West Bend Dyno found a bad MAP sensor. Pic attached. It had a torn boot. Looks like it was torn upon initial assembly by FAST. The torn piece floating in the port causing intermittent blockage. Based on other posts and what West Bend Dyno shared... it appears FAST has designed a very difficult TB to assemble. Combine that with cheap Chinese sensors and you get broken or damaged MAP sensors that are hard to check and difficult to diagnose. We put a high quality Delphi sensor in and carefully reassembled. Unfortunately I believe all of these aftermarket EFI systems use the same cheap sensors. FAST has doubled down with a difficult to assemble and maintain design.