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Re: EFI conversion reliability [Re: JAMESDART] #2566891
10/20/18 12:48 PM
10/20/18 12:48 PM
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Manitoba, Canada
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Originally Posted By JAMESDART
Megasquirt always interested me. But does it have any advantage anymore with with some of the stuff Holley is offering now?


When Megasquirt first came out, they were really the only ones on the market that could be basically endlessly customized and they were by leaps and bounds cheaper than anything else on the market. Like 100-200 for a kit vs 2-3k for anyone else. Prices on their competitor's stuff has some down in recent years and the other aftermarket stuff has more options for custom installs than ever before. Now it has basically boiled down to the trade off between cost and ease of installation. The basic MS kits can still be had for quite cheap, but you will be soldering the board together yourself for the cheap kits, however if you spend more you can get machine assembled systems. The learning curve is much steeper with them and support is by way of a forum rather than factory support through a supplier.

Re: EFI conversion reliability [Re: moparmarks] #2566903
10/20/18 01:23 PM
10/20/18 01:23 PM
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West Coast, USA
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EFI & overdrive are an amazing combination. Sounds like several of you havne't pulled the trigger on overdrive yet, as you don't use your cars much. My '68 is a daily driver (factory EFI- reflashed for 408 Magnum & OD)

Overheated/worked fuel pumps can be a reliability issue. Cavitation can exacerbate that problem on poorly designed systems.

Field serviceability on these old cars is hit & miss depending on what breaks and what you brought with you. Look at how many new cars are sitting on the side of the road...

If I had to, I can change both my pumps without dropping the tank. Having an OEM quality fuel system with field serviceable fuel pump/s, spare sensors and the tools and knowledge to troubleshoot them are critical, but so is a cell phone and a flat bed tow truck.


1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
Re: EFI conversion reliability [Re: jbc426] #2566908
10/20/18 01:40 PM
10/20/18 01:40 PM
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North Dakota
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I don't think reliability is an issue. I used to carry around a spare ballast, ecu, cap and rotor with the stock setup. Now all I need is a laptop. Good parts and a In-tank fuel pump setup are key to reliability. I would go with FAST or Holley sniper over FiTech. The two FiTech systems I worked on were not that great twocents

Last edited by Azzkikrcuda; 10/20/18 01:43 PM.

The only Carbs I care about are under the hood!
Re: EFI conversion reliability [Re: moparmarks] #2566939
10/20/18 03:10 PM
10/20/18 03:10 PM
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I was going to ad this earlier but I didn’t want to derail your thread, speaking from experience, I would do overdrive over efi. I did over drive conversion on 2 old cars and I found I drove them way more after.

Re: EFI conversion reliability [Re: moparmarks] #2566982
10/20/18 05:05 PM
10/20/18 05:05 PM
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Western Colorado High Desert
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I'm planning doing both the EFI and a 5-spd tranny.
I'm thinking I'll go with the Fast. Do have limited funds available.


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
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Re: EFI conversion reliability [Re: JAMESDART] #2566986
10/20/18 05:16 PM
10/20/18 05:16 PM
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Originally Posted By JAMESDART
I was going to ad this earlier but I didn’t want to derail your thread, speaking from experience, I would do overdrive over efi. I did over drive conversion on 2 old cars and I found I drove them way more after.
I did OD several years before EFI which was several years before boost. I strongly second the vote for OD before EFI if you need to do it in stages. My Charger still runs a 750 double pumper but has a 5spd in it. I have no desire to put EFI on it, but the extra gear was 'mandatory'.


70 Sport Fury
68 Charger
69 Coronet
72 RR
Re: EFI conversion reliability [Re: moparmarks] #2567017
10/20/18 06:53 PM
10/20/18 06:53 PM
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I'm finishing the build of the car so now is the time for both. boogie


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
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Re: EFI conversion reliability [Re: furious70] #2567019
10/20/18 06:56 PM
10/20/18 06:56 PM
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Florida
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Originally Posted By furious70
Originally Posted By JAMESDART
I was going to ad this earlier but I didn’t want to derail your thread, speaking from experience, I would do overdrive over efi. I did over drive conversion on 2 old cars and I found I drove them way more after.
I did OD several years before EFI which was several years before boost. I strongly second the vote for OD before EFI if you need to do it in stages. My Charger still runs a 750 double pumper but has a 5spd in it. I have no desire to put EFI on it, but the extra gear was 'mandatory'.


Same exact situation for me. The cost for the 518 was $2500, Fitech was $2000, so I did the OD 2 years before EFI. The benefits of OD can't be emphasized enough. Makes the car so much more enjoyable to drive. EFI is nice, but no comparison to having OD.

Re: EFI conversion reliability [Re: moparmarks] #2567026
10/20/18 07:29 PM
10/20/18 07:29 PM
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Oh I hear ya all. We put a 518 in my buddy's 70 Cuda vert 2 years ago. Then I drove it the 800 mile trip to Reno for HAN. With the top down all the way.
I've done several TKO conversions and I don't really like that setup.
Was thinking of doing the T-56 but don't want to build a new tunnel so I'm bellying up to the bar and doing the Passion 855. Just put one in my Buddy's 70 Challenger R/T this summer and it is really nice.
Think I'll put a 518 in my 72 SSP beings it has a 727 now.


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
Desert Mopar Metal
Grand Jct. CO
970-261-7039
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Re: EFI conversion reliability [Re: moparmarks] #2567044
10/20/18 08:29 PM
10/20/18 08:29 PM
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Pattison Texas
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A518 in my Charger, makes it nice to drive, EFI next, already run the tanks inc intank fuel pump.

Last edited by csk; 10/20/18 08:29 PM.

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: EFI conversion reliability [Re: moparmarks] #2567230
10/21/18 11:37 AM
10/21/18 11:37 AM
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Originally Posted By moparmarks
Oh I hear ya all. We put a 518 in my buddy's 70 Cuda vert 2 years ago. Then I drove it the 800 mile trip to Reno for HAN. With the top down all the way.
I've done several TKO conversions and I don't really like that setup.
Was thinking of doing the T-56 but don't want to build a new tunnel so I'm bellying up to the bar and doing the Passion 855. Just put one in my Buddy's 70 Challenger R/T this summer and it is really nice.
Think I'll put a 518 in my 72 SSP beings it has a 727 now.

FWIW I really dislike the TKO in my Charger. If I had ever driven one before having mine I would have done a Passion 4spd OD since the 855 wasn't really available.


70 Sport Fury
68 Charger
69 Coronet
72 RR
Re: EFI conversion reliability [Re: JAMESDART] #2567552
10/21/18 11:42 PM
10/21/18 11:42 PM
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Tulsa OK
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Originally Posted By JAMESDART
Megasquirt always interested me. But does it have any advantage anymore with with some of the stuff Holley is offering now?


A huge margin on price, even the full boogie Pre assembled MS3PRO units are way cheaper than holley and have as many or more features. You do have to make your engine wiring harness and I think Holley offers a universal one at a cost. I don't see making a harness as a downside though.

I originally wanted Holley but the price pushed me to look into the megasquirt stuff because I had seen some people using them with great success. There is lots of Drag Week and Bonnevile record holding cars that have run on the DIY Megasquirt kits from DIYAutotune.com.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: EFI conversion reliability [Re: moparmarks] #2567824
10/22/18 02:14 PM
10/22/18 02:14 PM
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Originally Posted By moparmarks
BcudaChris I'm over in Grand Junction. I've been running dual planes on my street motors for years with no problems. The one EZ setup I did was on this 472 Hemi crate motor with a dual planes. The setup behaved very well. Started right up. Great idle. Crisp throttle responce. Ran great. No smelly exhaust and burning eyes. No fowled plugs.
I understand that on a race motor a single plane is the way to go.


That is gorgeous man! Are you able to get those results at small block displacement levels and 230-ish duration? Maybe his unit is having problems..

This guys is running an airgap style intake on 383 cubes, a cam in that range, a Davis Unified HEI, headers and auto.

Re: EFI conversion reliability [Re: moparmarks] #2568421
10/23/18 04:26 PM
10/23/18 04:26 PM
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Re: EFI conversion reliability [Re: moparmarks] #2568586
10/23/18 09:49 PM
10/23/18 09:49 PM
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On the Fitechs I've heard about some people having problems and other people not having any problems so I don't know what the deal is. I've heard nothing but good about the Fast units. I've decided on the Fast with the Tanks Inc. fuel tank. Going to order them after my trip.
I haven't had any experience with aftermarket EFI on a small block, just that 472 Hemi so we'll see how it goes on my 5.9.


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
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Re: EFI conversion reliability [Re: moparmarks] #2568651
10/23/18 11:27 PM
10/23/18 11:27 PM
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Texas
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Originally Posted By moparmarks
On the Fitechs I've heard about some people having problems and other people not having any problems so I don't know what the deal is.



I think the short version on that is quality control.

To me, it seems like they got a bit too large too fast and simply scaled production. It takes a lot of effort to mass produce something with any quality. Even a blind squirrel might find a nut.

There are also questionable components within them, the first thing anyone experienced with FiTech will tell you to do is throw away the provided coolant temp sensor. It's inaccurate and can't be trusted....it's also one of the simplest components in the entire system, it's a stinkin' thermistor. A "quality" replacement is about $9 at retail pricing. To me, if they cheap out on that, what else did they cheap out on? Low end injectors? O-rings? Internal electronics? Oxygen sensors?


That said, I have installed one for a family member and it's been running excellent for a few thousand miles now. I would probably use one on one of my own vehicles, but I would for sure buy brand new and ensure I had a warranty of some sort. In the same breath, I'd be tempted to try a Holley Sniper kit...


1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi
2020 RAM 1500
[img]https://i.imgur.com/v9yezP9.jpg[/img]
Re: EFI conversion reliability [Re: GoodysGotaCuda] #2568682
10/24/18 12:47 AM
10/24/18 12:47 AM
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Florida
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Originally Posted By GoodysGotaCuda
Originally Posted By moparmarks
On the Fitechs I've heard about some people having problems and other people not having any problems so I don't know what the deal is.


There are also questionable components within them, the first thing anyone experienced with FiTech will tell you to do is throw away the provided coolant temp sensor. It's inaccurate and can't be trusted....it's also one of the simplest components in the entire system, it's a stinkin' thermistor. A "quality" replacement is about $9 at retail pricing.
..


First I've heard about this, what are people using for a replacement?

Re: EFI conversion reliability [Re: BDW] #2568740
10/24/18 09:08 AM
10/24/18 09:08 AM
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Texas
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Originally Posted By BDW
Originally Posted By GoodysGotaCuda
Originally Posted By moparmarks
On the Fitechs I've heard about some people having problems and other people not having any problems so I don't know what the deal is.


There are also questionable components within them, the first thing anyone experienced with FiTech will tell you to do is throw away the provided coolant temp sensor. It's inaccurate and can't be trusted....it's also one of the simplest components in the entire system, it's a stinkin' thermistor. A "quality" replacement is about $9 at retail pricing.
..


First I've heard about this, what are people using for a replacement?


There are a bunch, Delphi TS1007 is what I used. Looks like it's about $10 on Amazon.

There are dozens of posts on the FiTech owners facebook page about the topic.


1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi
2020 RAM 1500
[img]https://i.imgur.com/v9yezP9.jpg[/img]
Re: EFI conversion reliability [Re: moparmarks] #2568777
10/24/18 11:42 AM
10/24/18 11:42 AM
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North Dakota
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I had to replace the temp senders on both FiTech systems I worked on, They read about 30 degrees low.


The only Carbs I care about are under the hood!
Re: EFI conversion reliability [Re: moparmarks] #2568900
10/24/18 02:36 PM
10/24/18 02:36 PM
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Colorado front range
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Please do keep Moparts informed on your 5.9 efforts moparmarks! I'm not sold yet, as I'm a bit of a carb geek but I'm genuinely curious because my experiences.

Especially given we both have thin air to deal with (I'm originally from Glenwood so am familiar with Mesa County). West Slope is definitely hotter/colder/dryer, but our minor elevation difference is a wash I woul think.

That said, my theory (quality issues aside) is that what I've experienced with the dual plane is more related to the density altitude/dual plane/high overlap combination and that the self learning algorithm has some trouble with the conditions. I'd like to see one dialed in on a dyno around here. I may have that opportunity in the spring.

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