Failed piston ring?

[Kooldino]

3]some people have used a MAP to tune their car. For one it seems to work fine[ but he cracked a piston]. The other is still having the same problem that he had before he installed the MPI.

I think there's more than 2 people with a MAP. Besides, how many engines were blown doing things your way? I know of a few. My cracked piston had nothing to do with what sensor I preferred to tune my fuel with. My air:fuel ratios were fine. Before any damage was done to my piston, my motor would start to knock after 12psi on the exact same map that I had been running for months. The only difference is that the air had become cold. I retarded timing another 3 degrees over what I had already done, but it would still knock (although I couldn't hear it). I tried switching coils, and my spark plugs were properly gapped. It didn't make any difference. One day, I decided to do a compression test, and noticed one was low. Any input on why all of a sudden my car started knocking when I didn't change anything?

 

[Focus]

Any input on why all of a sudden my car started knocking when I didn't change anything?

Possible that not enough timing was pulled? Detonation killed it slowly?

 

[changedman]

Nick, you really need to stop jumping on people for posting neutral thoughts in a thread. seriously. its getting old.

 

[MPNick]

Nick, you really need to stop jumping on people for posting neutral thoughts in a thread. seriously. its getting old.

Then post all of the facts about your car.

 

[MPNick]

Possible that not enough timing was pulled? Detonation killed it slowly?

Yes that may have done it but he a very big problem with his car.

 

[Kooldino]

Possible that not enough timing was pulled? Detonation killed it slowly?

Nah, detonation probably killed it in one shot. I got a flashing CEL/random cylinder misfire at the time that I THINK it happened. I had 16 degrees of timing pulled at 14psi. I only pulled around 13 on the dyno. These cars definitely have a problem sparking correctly in the cold.

For example, if my car isn't well warmed up on a cold day, and I rev the motor (even in neutral), it revs smoothly, but then at say...4K RPM it will start breaking up so horridly that it won't rev any higher.

If I try it again 2 minutes later, it will make it to 4500rpm...

And it might be another 5 minutes before I can redline it.

This is NOT an issue with the MPI, AFAIK, because people with other EMS have the exact same issue.

I had the same problem (but worse) when I used to run colder plugs (about a year ago), but Nick reccomended that I run one stage hotter and it definitely helped out a lot.

 

[Kooldino]

Yes that may have done it but he a very big problem with his car.

Wait wait...lemme guess...the "very big problem with my car" is that I'm not tuning your way, right? Wrong. Regardless of what I used to tune, I still arrived at the same air:fuel ratios.

 

[Focus]

Nah, detonation probably killed it in one shot. I got a flashing CEL/random cylinder misfire at the time that I THINK it happened. I had 16 degrees of timing pulled at 14psi. I only pulled around 13 on the dyno. These cars definitely have a problem sparking correctly in the cold.

For example, if my car isn't well warmed up on a cold day, and I rev the motor (even in neutral), it revs smoothly, but then at say...4K RPM it will start breaking up so horridly that it won't rev any higher.

If I try it again 2 minutes later, it will make it to 4500rpm...

And it might be another 5 minutes before I can redline it.

This is NOT an issue with the MPI, AFAIK, because people with other EMS have the exact same issue.

I had the same problem (but worse) when I used to run colder plugs (about a year ago), but Nick reccomended that I run one stage hotter and it definitely helped out a lot.

I get something similar, but I am blowing out the spark. Fact is that our coils are wimpy and they suck. Aftermarket Amplifier will be the way to go.

 

[Kooldino]

I get something similar, but I am blowing out the spark. Fact is that our coils are wimpy and they suck. Aftermarket Amplifier will be the way to go.

I've been thinking along the same lines. I contacted Nick a few months ago to ask about the perfect power coil amp thing, but he hadn't tested it yet. I think that would help out a lot.

On the dyno, Dean's car had a MAJOR issue with that happening on some runs.

 

[TurfBurn]

I'll talk to my sources but I may be able to get a module from Microtech called the X4 which is a pre-amp for use with Bosch coils. It'd be a great option for ignition overhaul.

 

[Kooldino]

Here's the Perfect Power amp i was talking about...

http://www.perfectpower.com/Products/mega_spark.asp

The SMT-7 looks nice btw. I'd like to see a protege running with one.

 

[Kooldino]

I'll talk to my sources but I may be able to get a module from Microtech called the X4 which is a pre-amp for use with Bosch coils. It'd be a great option for ignition overhaul.

Could it be used with the MPI?

 

[Focus]

I'll talk to my sources but I may be able to get a module from Microtech called the X4 which is a pre-amp for use with Bosch coils. It'd be a great option for ignition overhaul.

Problem is that we have a positive trigger and before the perfect power module came out, NOONE made an ignition amp for a positive trigger.

 

[atticus1398]

Sorry , off topic, but what would the top of the piston look like if detonation had occured?

 

[Kooldino]

Sorry , off topic, but what would the top of the piston look like if detonation had occured?

it would usually have a lot of little dings in it

 

[TurfBurn]

Problem is that we have a positive trigger and before the perfect power module came out, NOONE made an ignition amp for a positive trigger.

That is a good point. I'll have to look into that as well. Thanks for mentioning that as that was news to me and will be important for some stuff I'm working on!

 

[Mr. Win]

Because some like yourself took shots at it for no reason. You made claims but never posted all of the facts about a very big problem with your car. To this day you still have not posted the main problem that you had with your car. You only talked about software problems, MPI problems and TM problems not any problems with your car. When people come on and talk about how great the system is running some of you have a
problem with it.

Maybe you are pissed off because YOU could never get it to run right in your car and many others have it working great. I do not know what the deal with some of you people, I do not care. All I know is that no one is going to bash my product for no reason and get away with it. I will call anyone out who thinks they can take shots me or my product and get away with it. I give as good as I take.

Why dont you just kill yourself and then you can be a martyr for the mpi tuner! Die for the cause! Looks like thats the only youll ever shut up. That or until each any every person in the world knows how great the MPI tuner is.

Pat has tried to be nothing but nice to you and yet you still attack him.

IF we made a poll on how many people love the MPI tuner would you shut up? OR make a thread where everyone can take shots at you and you can argue with them.

 

[Mr. Win]

Sorry , off topic, but what would the top of the piston look like if detonation had occured?

acutally thats more on topic then anything else on last two pages.

 

[MPNick]

Wait wait...lemme guess...the "very big problem with my car" is that I'm not tuning your way, right? Wrong. Regardless of what I used to tune, I still arrived at the same air:fuel ratios.

No thats not it at all. I am talking about the light show your old headers would do under higher boost. With one port not flowing and backing up so bad that it glowed red hot, how well do you think your WB AFR was reading? Could you trust your AFRs? Did did cause in some way the piston damage? Maybe the WB was telling one thing but the screwed up header was causeing problem with the way it could read it?

 

[MPNick]

Pat has tried to be nothing but nice to you and yet you still attack him.

Then way did he start the thread right after Matt did bashing the MPI?