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Fitech troubles (maybe)

Starting to think there not, supposed to be weather tight connectors and Ecu is in that silicone stuff so I am starting to doubt it
 
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While haven't used one, if I'm not mistaken the fitech and sniper setups are not that much different than the oem TBI setup. Other than the 4bbl throttle body and 4 injectors vs 2 on a stock setup. They both use similar sensors to make it run, but rather than needing an oem type scan tool to monitor data they use a held device. One other difference is if you get a setup that does not control timing it's actually less complex than the oem setup.

Either way you slice it, both setups can fail. It comes down to what you want to put up with.
My point is I can get the whole setup for less than $200 used and as long as all the parts are there it will run, and if it doesn't any mechanic anywhere you go can fix it, not that I would get help from a mechanic, but in general...:pimp:
 
My point is I can get the whole setup for less than $200 used and as long as all the parts are there it will run, and if it doesn't any mechanic anywhere you go can fix it, not that I would get help from a mechanic, but in general...:pimp:
$200 if there's no issues, maybe. Usually if they get pulled, at least one sensor is junk. That's been my experience in all the used units I've gotten so far.

The big issue is you are either limited to a stock TBI engine, which is a dog, especially in a 6k truck with 37s and 4.10s and at 10,000'
Or you have to start spending money on the throttle body and chip to feed a modified engine and end up spending what the entry level kits cost
Most guys have some power adders under the hood so retuning a stock Prom gets expensive
Ask me why I know


But I get the part about getting stock replacement parts anywhere. No denying that
 
This is really unfortunate---about the trouble people are having with aftermarket kits.

i wonder, do the guys that build it from scratch----i.e., megasquirt have better results?
 
This is really unfortunate---about the trouble people are having with aftermarket kits.

i wonder, do the guys that build it from scratch----i.e., megasquirt have better results?
I’ve known several guys who have gone this route. They are all OCD. So I’m sure their extra special lovin is part of the success

I looked at building an ECM for the mega squirt, and it was well over $400 for just the ECM that you could tune via laptop

Last chip I had made was $200 for a production ECM
 
$200 if there's no issues, maybe. Usually if they get pulled, at least one sensor is junk. That's been my experience in all the used units I've gotten so far.

The big issue is you are either limited to a stock TBI engine, which is a dog, especially in a 6k truck with 37s and 4.10s and at 10,000'
Or you have to start spending money on the throttle body and chip to feed a modified engine and end up spending what the entry level kits cost
Most guys have some power adders under the hood so retuning a stock Prom gets expensive
Ask me why I know


But I get the part about getting stock replacement parts anywhere. No denying that

Go with TBI and stick with stock parts/performance.
My point is I can get the whole setup for less than $200 used and as long as all the parts are there it will run, and if it doesn't any mechanic anywhere you go can fix it, not that I would get help from a mechanic, but in general...:pimp:

No denying that statement at all. But let's keep this in mind the last TBI GM truck put on the road was 1995 and was based on technology brought out in 1987. It has zero ability to adjust itself for any modifications. Most likely that $200 take off system needs work. But if you don't want or need performance beyond the stock setup there is no doubt they are a solid basic system. The key to the modern stuff is the computing power packed into that little box and it's ability to do two main things. It can adjust on the fly with modifications and allow for manual adjustments via a simple interface that does not require burning proms.

I'm not saying they are perfect either, but when it comes to adjustability and allowance for modifications the newer technology is smarter to use. It's still a basic TBI system that any mechanic should still be able to diagnose and work on. It's no harder to work on than a stock TBI as far as the nuts and bolts go.
 
I agree with just stick to a stock TBI and AC Delco parts. I’ve been there with doing mods, performance upgrades etc, etc, on previous vehicles. IMO and experience, it’s just not worth it. To much tinkering and reliability issues. I would usually spend all that money on mods and eventually just take it all off and go back to stock. With my 89 Jimmy I just look at it as it is, what it is. It’s no hot rod by any means and I’m completely fine with that. I am more so concerned with reliability and passing Ca. smog, and preserving a classic. Even if I was to put a 400HP motor in it, the handling characteristics and braking especially on a lifted truck would not be able to handle that much power anyway. Again, I have nothing against anyone wanting to mod their truck, I’m just giving my experience/opinion here.

As far as “washing” the motor with a hose, a big no no on a computer controlled engine. Just use a rag and some degreaser and do the best you can. I also think the washing may have something to do with the problems you are experiencing. Hope you get it worked out.
 
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I’ve known several guys who have gone this route. They are all OCD. So I’m sure their extra special lovin is part of the success

I looked at building an ECM for the mega squirt, and it was well over $400 for just the ECM that you could tune via laptop

Last chip I had made was $200 for a production ECM
Me? OCD? Nah....ok you’re right. Haha!
 
sounds like you have an ignition or power issue, quite possibly caused by the wash. Have you pulled the cap? Something as simple as one loose ignition wire will cause this......
 
changed ignition module before it would start but was dry under cap have coil that im going to change today and my buddy said the o2 sensor could be causing the unit to over fuel so i have one of those so ill change it
 
Go with TBI and stick with stock parts/performance.


No denying that statement at all. But let's keep this in mind the last TBI GM truck put on the road was 1995 and was based on technology brought out in 1987. It has zero ability to adjust itself for any modifications. Most likely that $200 take off system needs work. But if you don't want or need performance beyond the stock setup there is no doubt they are a solid basic system. The key to the modern stuff is the computing power packed into that little box and it's ability to do two main things. It can adjust on the fly with modifications and allow for manual adjustments via a simple interface that does not require burning proms.

I'm not saying they are perfect either, but when it comes to adjustability and allowance for modifications the newer technology is smarter to use. It's still a basic TBI system that any mechanic should still be able to diagnose and work on. It's no harder to work on than a stock TBI as far as the nuts and bolts go.
I agree with the limitations of an old design but it is replacing an even older carb.
As for me and my need for more power, I have a turbo diesel I am working on.
And the other candidate will receive a stock l29.
 
the reason I went with fitech instead of stock tbi is eddy heads 60899 eddy cam 7102 and air gap intake 350 bored 40 over . my engine is far from stock
 
the reason I went with fitech instead of stock tbi is eddy heads 60899 eddy cam 7102 and air gap intake 350 bored 40 over . my engine is far from stock
Your cam and heads are very close to mine. It didn’t like the aftermarket chip in the TBI much
 
this TBI vs aftermarket EFI debate......

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this TBI vs aftermarket EFI debate......

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Hey, I only say something when people complain about their aftermarket efi.
I am happy with mine and don't care about others they can run what they want.
 
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