C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Jun 10, 2007 | 07:01 AM
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I just put A Cold Fusion wet kit on my 95 Vette, with auto trans. I am running A 125 hp shot. It is pinning badly. Will the Crane Fireball box work on the stock ignition system? Is it hard to hook up ? Remember the 95 is A transition year for some of the engine controls.. I have been told this by people who could not get there scanners to work on my car. If anyone knows the answers for sure ,please help. Or am I better off calling Crane directly ??
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Old Jun 10, 2007 | 02:58 PM
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Am I doing something wrong ? I never get replies to my ????? Why?
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Old Jun 10, 2007 | 04:38 PM
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Originally Posted by 95 blue pig
Am I doing something wrong ? I never get replies to my ????? Why?
Patience my son, not everyone is on 24/7 and this section doesn't get as much traffic as some of the other areas.
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Old Jun 10, 2007 | 04:40 PM
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I can not comment on the crane box but pinging is not good.
Check your engine timing because it may need retarding.
Are you running better grade gas when you are hitting the nitrous?
What engine temparature are you running when you engage the nitrous?
These are some quick things that come to mind and if you are good on all 3 of these let us know and we will try to help you further.
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Old Jun 11, 2007 | 07:05 AM
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Originally Posted by NitrousSam
I can not comment on the crane box but pinging is not good.
Check your engine timing because it may need retarding.
Are you running better grade gas when you are hitting the nitrous?
What engine temparature are you running when you engage the nitrous?
These are some quick things that come to mind and if you are good on all 3 of these let us know and we will try to help you further.
I thought engine timing was not adjustable 0n a 95. If it is how is it done? I am running 93 Oct. gas as usual. I spray when engine is fully warmed up,198 Deg. Doesnt the ecm control the timing ? Also the knock count sensor, which I hear wont compensate near quick enough.
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Old Jun 11, 2007 | 09:05 AM
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Hi 95,

The Crane will work for you. I use the HI-6R because it is fully encapsulated and unaffected by water. Each year LT1 the ignition wiring varied. I make and sell complete Plug-N-Play wiring harnesses for each year LT1. You can choose to locate the Crane in either headlamp cavity. You can see photos and pricing on my website, "blowerworks.net". I prefer the Crane over the MSD for several reasons. Best regards, Greg
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Old Jun 11, 2007 | 02:22 PM
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I cant comment on the lt1 ingition system
but what about plugs and gaps?

did you swap out to different plugs and close the gaps?

how is the ignition system anyhow? do you think you may have a coil issue?

just stating the obvious, dont hit the nitrous again till you do some stuff to fix this. detonation (pinging) with a power adder usually = new engine.
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Old Jun 11, 2007 | 11:03 PM
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Originally Posted by 95 blue pig
I just put A Cold Fusion wet kit on my 95 Vette, with auto trans. I am running A 125 hp shot. It is pinning badly. Will the Crane Fireball box work on the stock ignition system? Is it hard to hook up ? Remember the 95 is A transition year for some of the engine controls.. I have been told this by people who could not get there scanners to work on my car. If anyone knows the answers for sure ,please help. Or am I better off calling Crane directly ??
Any intake or exhaust work, plugs? I would stick with a 100 shot just to be on the safe side (yet even safer not to use it until you fix the problem)
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Old Jun 12, 2007 | 12:58 AM
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95 was still OBDI, and the timing can easily be changed by using Tunercat tuning software.

You should also look into running a colder plug, like NGK TR6.
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Old Jun 12, 2007 | 05:22 AM
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Originally Posted by bill mcdonald
I cant comment on the lt1 ingition system
but what about plugs and gaps?

did you swap out to different plugs and close the gaps?

how is the ignition system anyhow? do you think you may have a coil issue?

just stating the obvious, dont hit the nitrous again till you do some stuff to fix this. detonation (pinging) with a power adder usually = new engine.
I have new MSD 8.5mm wires, new Delco Opit, new plugs gaped to .035 instead of.050 [plugs are owner manuel sugested ones]. It only pings when I spray.I had no problems with coils w/o spray
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Old Jun 12, 2007 | 05:24 AM
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Originally Posted by ubnpast
Any intake or exhaust work, plugs? I would stick with a 100 shot just to be on the safe side (yet even safer not to use it until you fix the problem)
No intake mods, EM long T. headers , cats gone, Borla the rest of the way back
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Old Jun 12, 2007 | 05:32 AM
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Originally Posted by STL94LT1
95 was still OBDI, and the timing can easily be changed by using Tunercat tuning software.

You should also look into running a colder plug, like NGK TR6.
Since I spray only once in a while, wouldnt I lose power when I run normally? I will try colder plugs. Also I havent sprayed since I added L/T headers and smaller plug gaps.
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Old Jun 12, 2007 | 01:28 PM
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With Tunercat you can have two seperate tunes. One for normal running and one for NOS. If you plan on spraying simply flash the NOS tune.
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Old Jun 12, 2007 | 02:24 PM
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I would advise to run ngk tr6 plugs with a .35 gap.

What gas are you running? 91, 92?

setting your timming with a tuner would drop your timming all around.
if you can get one of those boxes that tie into the ignition system that allow you to manually drop timming, it would be your best bet for the street light racer.
going to the track I suppose a tuner would work great.

another thing to consider, your pinging and the stock ignition is not pulling timing out to stop it.
maybe you need to fatten up the fuel jet a step or 2 to richen it up.
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Old Jun 13, 2007 | 06:18 AM
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Originally Posted by bill mcdonald
I would advise to run ngk tr6 plugs with a .35 gap.

What gas are you running? 91, 92?

setting your timming with a tuner would drop your timming all around.
if you can get one of those boxes that tie into the ignition system that allow you to manually drop timming, it would be your best bet for the street light racer.
going to the track I suppose a tuner would work great.

another thing to consider, your pinging and the stock ignition is not pulling timing out to stop it.
maybe you need to fatten up the fuel jet a step or 2 to richen it up.
running 93 Oct. gas. I think the MSD , or Crane ignition box is a better answer than Tuner Cat since they automaticly back off the timing to what ever works best [once figured out] by wiring it to the nitrous solinoid, so timing is only affected when spraying. I am running sugested jets,I think 52-nitrous , 31-fuel ... Thanks for the help--95 blue pig
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Old Jun 14, 2007 | 10:17 AM
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Originally Posted by 95 blue pig
running 93 Oct. gas. I think the MSD , or Crane ignition box is a better answer than Tuner Cat since they automaticly back off the timing to what ever works best [once figured out] by wiring it to the nitrous solinoid, so timing is only affected when spraying. I am running sugested jets,I think 52-nitrous , 31-fuel ... Thanks for the help--95 blue pig
Try it out now with the LT's, it may have helped the flow a little. Also, I am using 52/31 jets and that is only for 100hp shot. Do you have a 95? Check out the chart below:
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Old Jun 15, 2007 | 03:10 AM
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You need to fill out your sig.I did not bring my crystle ball tonight.
You never mix one company's nitrous jets with the other.Nos ,NX,Cold Fusion.
If it pings I would check to see if the fuel is at the noid and with the nitrous off when you hit it the car should fall on it's face.If it does the fuel is working.
When it pings eather the computer is not pulling timing or you are running lean.
Check all your vaccum lines(ie) the one under the cover (plastic) on the passenger side.
Right now without more info make sure all your plugs are tight.
The best plug to use with your motor is the NGK B8EFS gaped to .35.
Make sure your throttle body bolts are tight.
Their is a distinct differance between a ping and a blaha sound that the engine will make when something is wrong with the nitrous.
Make sure all the intake bolts are tight.Pinging is an air leak somewear.
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Old Jun 16, 2007 | 12:34 PM
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Originally Posted by REDC4CORVETTE
You need to fill out your sig.I did not bring my crystle ball tonight.
You never mix one company's nitrous jets with the other.Nos ,NX,Cold Fusion.
If it pings I would check to see if the fuel is at the noid and with the nitrous off when you hit it the car should fall on it's face.If it does the fuel is working.
When it pings eather the computer is not pulling timing or you are running lean.
Check all your vaccum lines(ie) the one under the cover (plastic) on the passenger side.
Right now without more info make sure all your plugs are tight.
The best plug to use with your motor is the NGK B8EFS gaped to .35.
Make sure your throttle body bolts are tight.
Their is a distinct differance between a ping and a blaha sound that the engine will make when something is wrong with the nitrous.
Make sure all the intake bolts are tight.Pinging is an air leak somewear.
I tried spraying again after closing plug gap, l.t. headers , and reprogramed ECM by PCM forless. It no longer pings , it just goooos !!! thanks again for the help
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