Optispark to Coilpacks
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 12
Its cool you got it to work. I dont see any downsides either (to coil pack conversion) other than cost.
In fact, DVCNI pointed out that if you do go to an LSx computer swap, that you will need to convert to coil pack anyways.
However, I suspect the OP doesnt plan on going that route and simply believes the optispark to be 'not reliable' and the only thing that is going to make his car reliable is if he goes to a coil pack conversion.
This is so not true...
Okay.....why my attitude?
Ive been so strong-winded on these posts because:
Ive gotten tired of hearing about people swapping out the optispark for a $69 made-in-china optispark, or (worse) a $500 MSD still-piece-of-garbage-optispark, and then complaining that the optispark is an unreliable piece of junk.
this is not about some 17 yr old and his lt1 camaro, or 24" rim b-body. Any of those optisparks have no place in these machines.
Why did your stock one fail? Simple. if its a 92-94, its because it wasnt vented and/or the seals cracked allowing water intrusion (just as mine did with only 26000 miles on it). If its a 95-96, then something broke down in your vent harness and/or the seals broke. I coat my optispark seal edges in RTV silicone as an extra fail-safe.
Ive said it a million times. You must use an OEM new old stock optispark with mitsubishi optical sensor and add a vented harness if you have a 92-94.
Also, coat the edges of the optispark with rtv.
In fact, DVCNI pointed out that if you do go to an LSx computer swap, that you will need to convert to coil pack anyways.
However, I suspect the OP doesnt plan on going that route and simply believes the optispark to be 'not reliable' and the only thing that is going to make his car reliable is if he goes to a coil pack conversion.
This is so not true...
Okay.....why my attitude?
Ive been so strong-winded on these posts because:
Ive gotten tired of hearing about people swapping out the optispark for a $69 made-in-china optispark, or (worse) a $500 MSD still-piece-of-garbage-optispark, and then complaining that the optispark is an unreliable piece of junk.
this is not about some 17 yr old and his lt1 camaro, or 24" rim b-body. Any of those optisparks have no place in these machines.
Why did your stock one fail? Simple. if its a 92-94, its because it wasnt vented and/or the seals cracked allowing water intrusion (just as mine did with only 26000 miles on it). If its a 95-96, then something broke down in your vent harness and/or the seals broke. I coat my optispark seal edges in RTV silicone as an extra fail-safe.
Ive said it a million times. You must use an OEM new old stock optispark with mitsubishi optical sensor and add a vented harness if you have a 92-94.
Also, coat the edges of the optispark with rtv.
Totally understandable..
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
Not yet, but in a couple months I will buy one. I've already bought Greg's ATI damper kit and will be buying the bracket and supercharger from him as well.
I want to get the car up and running first on the eficonnection kit, then I will add the YSI.
There are a few other members with YSI's, I have their names written down somewhere . . . .
-sorry for the hijack
I want to get the car up and running first on the eficonnection kit, then I will add the YSI.
There are a few other members with YSI's, I have their names written down somewhere . . . .
-sorry for the hijack
Thread Starter
Advanced
Joined: Nov 2013
Posts: 54
Likes: 2
Mitsubishi Optical sensor
how do I tell if the distributor has a Mitsubishi optical sensor/pickup/trigger ? I bought a distributor that I thought was a AC delco and was informed it might be but it would depend on where it was shipped from blah blah blah so how do I tell if I have a good sensor for the distributer
Team Owner
Joined: Mar 2001
Posts: 30,845
Likes: 292
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
I would expect a slight power increase but that's not why I'm doing it. I'm actually a fan of the Optispark (at least the original Dynaspark that actually I have for sale now). I have never seen a car start up faster than mine - it's almost instant.
I'm primarily doing it to get the LS computer - more specifically for boost. I will be adding a Vortech YSI soon and the LS computer has provisions for boost - LT does not.
I'm primarily doing it to get the LS computer - more specifically for boost. I will be adding a Vortech YSI soon and the LS computer has provisions for boost - LT does not.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
I would think you are close to pegging your MAF right now?
I'm not saying you can't run boost with an LT1 computer, just that the LS computer is 10 times better for that because it "understands" it.
Last edited by DVNCI; Nov 19, 2013 at 09:26 PM.
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 12
I'm going MAF-less because I'm planning on making 800 hp or better, so that won't work for me. As you know you can't go past 1 bar w/ LT computer if running speed density.
I would think you are close to pegging your MAF right now?
I'm not saying you can't run boost with an LT1 computer, just that the LS computer is 10 times better for that because it "understands" it.
I would think you are close to pegging your MAF right now?
I'm not saying you can't run boost with an LT1 computer, just that the LS computer is 10 times better for that because it "understands" it.
Thread Starter
Advanced
Joined: Nov 2013
Posts: 54
Likes: 2
I have a intermittent miss and whial driving the Optispark seems to have some malfunction the engine vibrates and when I give it some gas the acceleration just liberates more then kicks in so I am looking at replacing the optispark sooner then later I have a new Water pump just need a distributor LT4 seal kit the water pump drive shaft was thinking might as well replace the timing set to extreme duty roller set and replace the lifters as I have a set and one is ticking now and then
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
You may have a 2 bar MAP sensor but how are you telling the PCM the car is actually seeing 2 bar? As far as I know, there is no way to have a MAP table in an LT computer go above 1 bar?
I'm guessing you are scaling everything in half - which I don't want to do.
I'm guessing you are scaling everything in half - which I don't want to do.
Last edited by DVNCI; Nov 20, 2013 at 09:34 AM.
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Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 12
You have to change the slope and offset of the map sensor then verify it's working with air pressure and a gauge. I did that before tuning. Then the maps have
to accommodate above 100kpa and need to be rescaled...that's all don't too up to 200 kpa.
to accommodate above 100kpa and need to be rescaled...that's all don't too up to 200 kpa.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
As I said, people can and do make it work just fine, but I like things simple and clean. Also, I do my own tuning, so I want it to be easy.
Race Director
Joined: Sep 2001
Posts: 14,648
Likes: 750
From: NEwhere Ohio
how do I tell if the distributor has a Mitsubishi optical sensor/pickup/trigger ? I bought a distributor that I thought was a AC delco and was informed it might be but it would depend on where it was shipped from blah blah blah so how do I tell if I have a good sensor for the distributer
The 95-96 looks a little different, but does have a smaller mitsubishi symbol on the optical sensor.
