2-step backfire
12-08-2009, 12:20 PM
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2-step backfire A few months ago I installed a LNC003 2-step on my car. When activated the car would backfire due to the unburnt fuel. Having the car backfire while studdering really messed up my concentration, and sounded like ***. I was wondering if another 2-step like the MSD 8733 would be any different. I really need to get a 2-step working so my launches off the transbrake are consistent.
Any thoughts? My exhaust consists of headers to x-pipe to bullets.
Any thoughts? My exhaust consists of headers to x-pipe to bullets.
12-08-2009, 01:02 PM
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This video is borrowed from another post. This isn't my car, and my car is much louder. This is exactly what mine does on the LNC 2-step....any ideas?
http://www.youtube.com/watch?v=MR5LxRpXKxY
http://www.youtube.com/watch?v=MR5LxRpXKxY
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12-08-2009, 05:31 PM
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[img]http://www.youtube.com/watch?v=ePawuRuZxGU[img]
12-08-2009, 05:36 PM
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This video is borrowed from another post. This isn't my car, and my car is much louder. This is exactly what mine does on the LNC 2-step....any ideas?
http://www.youtube.com/watch?v=MR5LxRpXKxY
http://www.youtube.com/watch?v=MR5LxRpXKxY
The week before, it was 80-85* and had less of a backfire, I don't think I noticed any of my backfires while in the car honestly...I was just focused on the tree and other things
12-08-2009, 06:01 PM
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My car is gutted and it sounds like bombs are going off under my seat. I guess I'll just buy a big tach and mount it on my dash where I can see the rpm range and just skip the 2 step until I can have it leaned out from idle to 4000 rpm's.
I was just hoping another 2 step would work better than the LNC one I had tried a few month's back.
I was just hoping another 2 step would work better than the LNC one I had tried a few month's back.
12-08-2009, 08:08 PM
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i have had the harlen and the msd. for some reason the msd was waaaaay smoother than the harlen. however, i did not back fire like that with either. i usually had it set between 5800-6200 on my six speed. we will see what happens with the auto set around 2k.
12-09-2009, 12:08 AM
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Yeah that doesn't sound right at all. Here's a vid of mine with the LNC-003 set at 6700rpms. http://www.youtube.com/watch?v=2WnpciXAkss
12-09-2009, 04:00 PM
#13
I run the LNC-
try moving it 100rpm either way. There something about how it controls the amount- and order, of coils turned off. In how its setup to work.
I see a huge change between a no fireballs, pops hitting it, like its the stock limiter. Slight pops, you know its a limiter. And a gunshots, outside the exhust fireballs like its anti-lag. Within a few 100rpm. I set mine up ther 5800-6200 on DR and its quite. 6500-6700 on slicks still quite. There somthing about setting it at 6400 it shoot gun shot loud as **** fireballs. I leave it at that on the street setup so I can WOT shift easily when I need to. Moving it too 6500 and I shift before it shoots a fireball, but still works the same? My revlimiter is up there 7200 so I dosnt think that it affecting it, getting close.
For the low rpms, Not sure if it works the same way. I would think it be in 100% rpm limiting mode, if your really going WOT and it having to contraol for 3-4K
try moving it 100rpm either way. There something about how it controls the amount- and order, of coils turned off. In how its setup to work.
I see a huge change between a no fireballs, pops hitting it, like its the stock limiter. Slight pops, you know its a limiter. And a gunshots, outside the exhust fireballs like its anti-lag. Within a few 100rpm. I set mine up ther 5800-6200 on DR and its quite. 6500-6700 on slicks still quite. There somthing about setting it at 6400 it shoot gun shot loud as **** fireballs. I leave it at that on the street setup so I can WOT shift easily when I need to. Moving it too 6500 and I shift before it shoots a fireball, but still works the same? My revlimiter is up there 7200 so I dosnt think that it affecting it, getting close.
For the low rpms, Not sure if it works the same way. I would think it be in 100% rpm limiting mode, if your really going WOT and it having to contraol for 3-4K
12-09-2009, 04:10 PM
#14
The above video of the black car, that was being on the 2 step for WAY too long. You shouldn't be on it for more then a second, on a slow tree, I'd wait until the top bulb is totally lit before even putting the foot to the floor.
On a pro tree, you might be there for a second longer due to the randomness of it, but as a general rule you don't want to leave a car on a 2 step for any longer then you have to. Fireballs, and all that are the norm.
On a pro tree, you might be there for a second longer due to the randomness of it, but as a general rule you don't want to leave a car on a 2 step for any longer then you have to. Fireballs, and all that are the norm.
12-09-2009, 04:43 PM
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The above video of the black car, that was being on the 2 step for WAY too long. You shouldn't be on it for more then a second, on a slow tree, I'd wait until the top bulb is totally lit before even putting the foot to the floor.
On a pro tree, you might be there for a second longer due to the randomness of it, but as a general rule you don't want to leave a car on a 2 step for any longer then you have to. Fireballs, and all that are the norm.
On a pro tree, you might be there for a second longer due to the randomness of it, but as a general rule you don't want to leave a car on a 2 step for any longer then you have to. Fireballs, and all that are the norm.
My best time was actually nailing it from 1st to 2nd bulb?
12-09-2009, 04:54 PM
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I just realized that your 2 step video ran through the sequence 3 times. I think I'm going to try the MSD set to 4k and only hit it once the tree starts moving. I don't run a pro tree so It should work.
