msd chip

Can someone tell me how a chip acts when it is bad, I think I have a bad one.

stick another one in it............

It's very common for a bad chip to start dropping cylinders about 300 rpm before it's supposed to drop them.

Charlie

Would it trigger an RAS early too?

possible.......... last time i was at the track I saw a 7700 shift on the first pass and a 7400 on the second, I had a 7200 chip in the box, I put my old 7300 back in to see if it happens again.

I need to get off my ass and wire in a relay and let the 7531 do it and get rid of the chips completely.

Had an electric shift solenoid that would sometimes short shift, sometimes NOT shift. Maybe the chip....

Also an important thing for those who don't know is that the chip starts cutting cylinders 200rpm's before what they are labeled.

bigblok2000ranger wrote:Also an important thing for those who don't know is that the chip starts cutting cylinders 200rpm's before what they are labeled.

Why?

chip is just an ohm value, the ign box does the work.......or window switch etc.

Then we should be able to check a chip with an ohm meter.......?

richter69 wrote:stick another one in it............

I asked a question, if you don't know the answer, don't make a fool of yourself.

I think so, never done it, just always put another chip in lol ..... i got a bunch of um.

If you have a chip for shift, say 6500, it sputters, but then shifts, and runs goo after the rpm drop, but when it gets back to the 6500 rpm, it starts sputtering again, even though it is a two speed tranny will it cut out at the rpm mentioned?

richter69 wrote:I think so, never done it, just always put another chip in lol ..... i got a bunch of um.

I haven't been back to the track yet, just trying to figure out what happened, and how the chips work.

i wouldnt think the chip in the shifter would make It cut out, what highside chip is in it?

richter69 wrote:i wouldnt think the chip in the shifter would make It cut out, what highside chip is in it?

7200 rpm, seems that when it gets to the shift point it starts the cut out, the activator doesn,t know it is a two speed, so I thought the chip was bad, or going bad.

maverick wrote:

bigblok2000ranger wrote:Also an important thing for those who don't know is that the chip starts cutting cylinders 200rpm's before what they are labeled.

Why?

The most sensable explanation I was offered was that this was to give the chip a safety cushion in case of driveline breakage.

pull all the chips out and shift it the old fashioned way just to verify......

bigblok2000ranger wrote:

maverick wrote:

bigblok2000ranger wrote:Also an important thing for those who don't know is that the chip starts cutting cylinders 200rpm's before what they are labeled.

Why?

The most sensable explanation I was offered was that this was to give the chip a safety cushion in case of driveline breakage.

NO, it's because as you are spinning up the RPMs, it would not react fast enough to be instantaneous, it needs a cushion. It works under to give it time to flash up to that value.

342g wrote:

richter69 wrote:i wouldnt think the chip in the shifter would make It cut out, what highside chip is in it?

7200 rpm, seems that when it gets to the shift point it starts the cut out, the activator doesn,t know it is a two speed, so I thought the chip was bad, or going bad.

Are the valves floating? Did you get the fuel pump figured out or was the pump volume ok?

Curt wrote:

bigblok2000ranger wrote:

maverick wrote:

bigblok2000ranger wrote:Also an important thing for those who don't know is that the chip starts cutting cylinders 200rpm's before what they are labeled.

Why?

The most sensable explanation I was offered was that this was to give the chip a safety cushion in case of driveline breakage.

NO, it's because as you are spinning up the RPMs, it would not react fast enough to be instantaneous, it needs a cushion. It works under to give it time to flash up to that value.

That makes sense!

bigblok2000ranger wrote:

342g wrote:

richter69 wrote:i wouldnt think the chip in the shifter would make It cut out, what highside chip is in it?

7200 rpm, seems that when it gets to the shift point it starts the cut out, the activator doesn,t know it is a two speed, so I thought the chip was bad, or going bad.

Are the valves floating? Did you get the fuel pump figured out or was the pump volume ok?

Yea, it's not fuel, it is electrical, if it stops raining I will do the things Jon said, change the shift chip, and then take them all out., It seems funny, that everytime it gets to 6500 rpm, it starts cutting out.

What kind of fuel system are you running Harold?

Curt wrote:What kind of fuel system are you running Harold?

I have a electric pump, aeromotive a-2000, with a aeromotive regulator and filter

Are you sure you're not running out of fuel? Floats too low? Dirty fuel passage?