Pinging?

I talked to Jerry today, this is called tip in spark knock its due to the fact the car is locked up in OD which means the car is at a high load situation if you snap the gas pedal lightly the transmission does not have time to drop out of OD and that's why they are getting a very quick rattle,
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That's exactly what I was thinking it was. Just think of not down shifting in a standard transmission car soon enough, while driving up a hill.

If I recall Ford recommends taking the transmission out of O/D on hills.
 
Hey Sarge....

I do have the stat and plugs....:up:

My car runs GREAT and the low speed knocking won't hurt anything....sounds like the clatter you hear when starting a hot engine with a little too much base timing.....only momentary at 1200 RPM's!!

I may run down to Jax this week to meet Dennis and let him make the changes he and Jerry suggest. If the car had to remain "as is" I would leave it this way since it runs far better than stock and driving around town with O/D off works fine!!

This site with the "Brain Pool" we have gets it done!!! :up:

Thanks to all involved!!

Now.....On to the BLOWER!!!!! :banana:

Marauderjack :)
 
I feel we all are very lucky to have Vendor's like Dennis Reinhart who give us answers to our problem's and are willing to help us when we need it. I've called Dennis a few time's and always found him to be straight foward , Honest and helpful. And these day's how many vendor's are like that? Not many !
 
I e-mailed Superchips regarding this issue and they suggested using 92 Octane fuel . I'll try this and post the results .
 
89VERT said:
I e-mailed Superchips regarding this issue and they suggested using 92 Octane fuel . I'll try this and post the results .
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What grade fuel were you using before?
 
I have used 91 almost exclusively since I got the car. I occasionaly use 92 when that's all that's available.
 
Spark Knock with Tuner

I have a Tuner and have experienced the same knock, when slowly accellerating up a hill. I did not have the problem until winter set in. I have a lot of experience with fuel suppliers and attribute my knock to the fact that most fuel suppliers have a "winter" mix fuel, and a summer mix which meet the posted octane requirements, but the winter mix fuel has a lower vapor pressure, which can lead to knock. Basically winter fuel does not have the highest knock protection because of the lower average ambient temprature.
Sarge's idea of a lower t-stat is pretty good in my opinion, though as he said if you use Dennis's programmer he would be the authority.
 
Here in Oregon the gas is not so good either. The pump says 92, but I have this problem on my totally stock MM. On tip in from cruse, it pings.
 
I believe there is some confusion over what's available and who makes what, as far as tuners go for our cars, let me straighten this out. There is a Superchips Tuner model # 1725 this is an off the shelf programmed tuner that has a good all around program for the 03 Marauder. 89VERT bought this directly from Superchips not me.

I do not believe they have a model for the 04 yet. Superchips was founded in England in 1983, Superchips, Inc. was one of the first companies specializing in the “tuning” of computer-controlled vehicles for more power. Superchips sells a Blue one bank chip and says Superchips right on it. Starting in 05 all ford cars will have no service port so the demand for chips will drop in the coming years,

At the beginning of this year my friend Jerry W went in to partnership with Chris Johnson and David Posea, Jerry sold his tuning software to Superchips, Now they are the owners of SCT or Superchips Custom Tuning, SCT is a total separate entity of Super chips. They have there own Chips that are 4 bank and they are Red that say SCT on them they also will have a new Four Program Chip similar looking to what I have been selling in the past, this chip has 4 position rotary select switch. Superchips is fazing out of the custom chip business.

Now the tuner I ran the special on comes to me Blank its not a 1725. I load the tuning files that I have been selling here since day 1, these are files we constantly revise to gain you the maximum safe RWHP on, if we find we can change some thing, its done, I am a silver SCT dealer I have all the files for any Ford Lincoln Mercury car made I can change any value in there files, so if we find that something is not right if there is something you do or do not like by all means let my self or SCT know. We will fix it immediately. I am a Superchips dealer as well so if I can help the members here with a issue of something with Superchips even though they did noy buy it from me I will.



Dennis A. Reinhart
 
I trust that everybody is now aware that my situation involved a 1725 unit from Superchips and not anything from Dennis .

My apologies if I got people confused .
I 'm just a dumb hockey playing Canuck !
 
Update!

I've tried two full tanks of 92 Octane fuel and......
the pinging /detonation has vanished.

Thanks for the advice from all !
 
Let me share my experiences. Remember, I live in California, and all I can get here is our crappy 91-octane "premium" fuel.

1. Got a dynotune from SCT guys several months ago.
2. Experienced knocking at low RPMs under load immediately after tune.
3. Both Jerry and Chris retuned the car several times that day to try to eliminate knocking.
4. Drove back to L.A. from San Diego dynotune--knocking persisted.
5. Purchased Denso IT-22s/180-degree stat from Dennis to reduce knocking--no noticable improvement.
6. Drove to SEMA in Las Vegas to have Chris from SCT reflash my EEC again.
7. Drove back to L.A. from SEMA--knocking persisted.
8. Purchased SCT 9100 ProRacer EEC flasher/tuner/software/cable directly from SCT, but have no clue of what to change to resolve issues.
9. Can't seem to get the serial port on my PC to talk to the 9100 anyway (EEC version of tuner is NOT a USB device--it's serial).
10. I do not have the factory CRD1 file in the tuner (the tuner comes blank).
11. No one at SCT seems to be able to get my original dynotune file sent to me.
12. Since the dyno's 02 sensor was defective at the time of the original dynotune, I have no accurate baseline AF data to compare. I don't even have a CRD1 factory EEC file anymore to compare.
13. Planning on ordering Dennis' cooling mod to help address the knocking issue.
14. Really don't know what else to do here anymore. IMO, the ProRacer software is too cryptic for the layperson to try to program.
 
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Much thanks to Dennis for adjusting my tuner yesterday. Five minutes and I was good to go. These SCT's really are the bee's knees.


Take Care
 
Rattling/Pinging

I have been experiencing the same thing. I suspected that it might be from adding octane booster to Esso 91 gas so I stopped adding it on the last fill a couple of days ago and I haven't heard it since. The rattling was occuring mostly when I was accelerating but also would happen when I turn the ignition off.
 
Reduaram said:
I have been experiencing the same thing. I suspected that it might be from adding octane booster to Esso 91 gas so I stopped adding it on the last fill a couple of days ago and I haven't heard it since. The rattling was occuring mostly when I was accelerating but also would happen when I turn the ignition off.
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Since the reformulation of their premium fuel offering (and thereby dropping from 92 octane to 91), Esso has dropped off my list of Marauder-approved fuels. I get some part-throttle pinging now and again.

So,
Esso 91 = :down:

Octane boosters in any modern car = :down: :down:

As much as I hate it, I've been forced to start swilling Petro Can 94 to fuel my MM, which is now at > $1 per liter here in <S>screw-us-in-the-arse-land</S> Quebec.
 
The original problem was related to a software glitch off the SCT site thats why I asked for all members that bought tuners in the group buy to send them back for corection, I have corected all files now for the Marauder and they are as good if not better from previous files, so if you have not sent this back before please do. I will corect it and send it out right away.
 
I bought the tuner from Dennis and had a problem with spark knock. Dennis had this fixed and sent back within a day. Just send it back as he has mentioned if there is a problem. I haven't had any problems even with beating on the car thoroughly since I got it back.
 
13. Planning on ordering Dennis' cooling mod to help address the knocking issue.


Shooter:

1. I already have the cooling mod installed and occasionally still knock at low RPMs.
2. Returned DR's SCT tuner a few months back for reprogram and reinstalled. Still have knocks - maybe it needs to be reprogrammed again?
3. How about if we add a few gallons of racing fuel when filling up to enrich the 91 gas? Maudominquez' idea - costly but may work?

Any ideas?

PR
 
The only way to keep the good performance of the SCT tune and eliminate "tip in" knocking is to keep the TC unlocked at low speeds so as to keep engine RPM's up!!! :up:

Lidio has done this very effectively and I would think by now Dennis can do it as well?? :bows: Lidio locks the TC in 4th gear only above 60 MPH....Mine is currently set to lock in 4th gear only at 50 MPH.....It also unlocks automatically below 40 MPH!!! :banana:

The elimination of the TC lockup at lower speeds allows the engine RPM's to increase as the TC "slips" and eliminates that damn knocking!! :up:

BTW...Before the changes above I found that mine would only knock when the TC was locked and the RPM's were between 1000 and 1200....when accelerating slightly. Any more throttle and it would downshift with considerable knocking!! :eek:

I think SCT is working on a file that allows the TC to unlock when coasting or braking?? Maybe Dennis can address this??

Marauderjack :bounce: :beer: :up:
 
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