1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

should i go for MSD or 2nd gen direct fire mod?

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Old Sep 30, 2005 | 02:55 AM
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should i go for MSD or 2nd gen direct fire mod?

as title
it's for my gsl-se
anyone had experience both?
any input will be welcome
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Old Sep 30, 2005 | 03:14 AM
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OMFGBLACKBABYJESUS@ABBQ!!!!!





















MSD FO SHIZZLE, garunteed hella more spark!!!! just run a single box on the leading side thru the distributor.
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Old Sep 30, 2005 | 10:11 AM
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i personally think that the second gen coil is about the same as having an msd but like 400X cheaper.
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Old Sep 30, 2005 | 11:19 AM
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MSD I have it and my idle is smooth and free reving but ive never tried 2nd gen coils.
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Old Sep 30, 2005 | 11:39 AM
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I've had both setups in my -SE.

I wasn't too impressed with the MSD. It didn't feel any more powerful, and it was expensive... And took up a LOT of space.

The 2nd gen upgrade was cheap, easy and took up little space. I also felt it ran smother and stronger with the 2nd gen upgrade.
Plus there's the new 2nd gen ignitor trick too:
https://www.rx7club.com/showthread.php?p=482508
It'll make it even BETTER!
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Old Sep 30, 2005 | 11:51 AM
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2GCDFIS with tranisistor trick is far better than an MSD.
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Old Sep 30, 2005 | 12:09 PM
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Is that your final name for it Jeff20B?

2nd Generation Coil Direct-Fire Ignition System...?

I love your names for your ignitions...
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Old Sep 30, 2005 | 01:27 PM
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Originally Posted by Jeff20B
2GCDFIS with tranisistor trick is far better than an MSD.
And the average total investment is only around 50 bucks! Hella cheap compared to MSD option. This is one mod I'll give "three thumbs up".
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Old Sep 30, 2005 | 01:29 PM
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Yes, it is my final name for it.

I had a long post explaining all the reasons but I'm sure it would bore everybody so I'll just give the basic reasoning. Most of us were already familier with classic 2GCDFIS, and the ATF/MMO treatment/trick. I put them together and viola! 2GCDFIS with transitor trick. (I didn't want to force everybody to memorise yet another acronym, nor did I want TT on the end of it because most people think of twin turbos when they see TT).

Then again, 2GCDFISw/TT doesn't look all that bad. It's just the addition of w/ for 'with' and TT for 'transistor trick'. Meh, most folks may not know what you're talking about. Besides, the transistor trick concept is still pretty young. Let's give it a while to let it sink into the general consciousness of the forum before we use this acronym.
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Old Sep 30, 2005 | 01:35 PM
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Lol! Alright... but at least I'm up to speed now!
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Old Sep 30, 2005 | 02:39 PM
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How about NPKAASG (Nuclear Physicist's Kick *** Atomic Spark Generator)?
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Old Sep 30, 2005 | 03:12 PM
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thx for the input guys
i thing i am going to go for 2nd gen upgrade
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Old Sep 30, 2005 | 03:17 PM
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should i go for the s4 or s5?
or they are the same?
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Old Sep 30, 2005 | 03:20 PM
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As far as I know, the coil with ignitor assembly stayed the same all through the 2nd gen production run.
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Old Sep 30, 2005 | 03:29 PM
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Why choose one when you can have both? Fire off a second gen coil direct fire style with an msd.

-Marques
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Old Sep 30, 2005 | 03:59 PM
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Originally Posted by mwatson184
Why choose one when you can have both? Fire off a second gen coil direct fire style with an msd.

-Marques
can you give more detail?
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Old Sep 30, 2005 | 04:22 PM
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Hey Ray,

if you are ever in the south bay, i can give you a ride in a 2nd w/ tt car, i don't know much about the msd though, so i don't know how they compare
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Old Sep 30, 2005 | 04:27 PM
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Originally Posted by Zyrano
Hey Ray,

if you are ever in the south bay, i can give you a ride in a 2nd w/ tt car, i don't know much about the msd though, so i don't know how they compare
oh nice i would love to do that
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Old Sep 30, 2005 | 05:10 PM
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I liked MSD and went with it...I'm very pleased with the end results. Smoother rev all the way to the red line and just looks sweet. I had to go with what the track guys use.
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Old Sep 30, 2005 | 09:34 PM
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whats the performance difference between the original DLIDFIS and the 2nd gen ignitor one?
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Old Sep 30, 2005 | 09:37 PM
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Originally Posted by SF@Rx7
as title
it's for my gsl-se
anyone had experience both?
any input will be welcome
Buy the MSD.

The reason you go direct fire with two coils when you get an MSD is so you don't burn out distributor caps and rotors all the time.

Seriously. The difference between MSD and a standard ignition setup (of which the FC ignition is a member) is like the difference between a standard ignition setup and a damp cardboard match in a rainstorm.
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Old Sep 30, 2005 | 10:47 PM
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someone should put them through a test.. i really think the difference isnt that great.
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Old Sep 30, 2005 | 10:58 PM
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I did put them through a test.

My car would barely *run* in a zero-degree start. Pull the choke out all the way, and it would blubber around 800rpm and flood out if you didn't tend to the car.

After the MSD. Zero degrees overnight. Yank choke out, instant smooth 1500rpm, can safely ignore car and get out and brush snow/scrape ice/etc without having to be at the ready to jump into the car and keep the engine from flooding. Oh and 20% better fuel economy, too.

There *is* no comparison. A double ended coil is a hair better than stock, but the MSD literally blows them away.

If you're not using the MSD coils, by the way, you may not be getting the best results, either. Standard coils work with a capacitive discharge ignition, but for best results you need something with somewhat different characteristics.
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Old Sep 30, 2005 | 11:59 PM
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Originally Posted by peejay
I did put them through a test.

There *is* no comparison. A double ended coil is a hair better than stock, but the MSD literally blows them away.

If you're not using the MSD coils, by the way, you may not be getting the best results, either. Standard coils work with a capacitive discharge ignition, but for best results you need something with somewhat different characteristics.
peejay have you tried the 2nd gen coil with the transistor trick (2GCDFIS with tranisistor trick)? and have you even read threw part of the thread concerning the transitor trick? I do not know from personal experience but Jeff20B I think was one of the first people to start doing the DLIDFIS, direct fire system using three first gen coils. (correct me if I'm wrong) and he beleved that it performed as well if not better than the msd ignition for a fraction of the cost. Heres a link http://www.geocities.com/cd23c/dlidfis.html

But after that he is the one that started the thread which lead to the development with some help to make the 2GCDFIS with tranisistor trick I believe he has a lot of experiance with this and knows alot 2GCDFIS with tranisistor trick is a great up grade for your Rx for a fraction of the cost of the msd just check out this thread about the 2nd gen coil and you will see unless ypu have an extra $400+ to spend but this is just my opinion. https://www.rx7club.com/1st-generation-specific-1979-1985-18/transistor-trick-2gcdfis-411312/


Originally Posted by Jeff20B
2GCDFIS with tranisistor trick is far better than an MSD.
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Old Oct 1, 2005 | 01:34 AM
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I tried the MSD with two stock 1st gen (Diamond) coils. It was like blahsville. A little more power than stock cap and rotor. Then I tried DLIDFIS and low and behold it stopped backfiring! More fuel was actually burning. I didn't touch the carb through all of my early tests, and the mean temperature was around 50°F each time.

The MSD is worth it to some; I won't argue about that.
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