944 Turbo DIY TunerPro Chips

[rbwies]

Bravo!

[Bill]

Tom,

Amazing work, thank you!! Can this article be printed so a hard copy can be referenced in the garage or on the road? I would be happy to purchase a PDF copy.

A couple of questions:

1. In order to use the Ostrich in place of the EPROM, do the maps on the EPROM need to be transferred to the Ostrich prior to installing the Ostrich? If so, how is this done?

2. On your Item 11. Other Maps: you reference the altitude sensor. I have seen a post on setting up Rogues DME Logger that notes to unplug the altitude sensor in order to allow the DME Logger to see a wide band O2 sensor. I wonder how much impact there is on a tune that has the altitude sensor unplugged? Also do you use the Rogue DME Logger when you tune?

[944m3]

I have the A-Tune currently, along with other mods, and I would like to upgrade my injectors to 650 cc/min Bosch. So, if I understand this correctly, I should be able to just add them to the A-Tune program with Moates Ostrich using Tuner Pro RT, right?

Hopefully Josh chips in. It was my understanding a-tune could be tuned, but not with the files I recently posted. I'm also not sure how the Ostrich would work, since it plugs into the socket where the a-tune chip goes, but I thought it did work somehow. Maybe @944m3 can offer some insights too, as he has an a-tune for sale right now.

I am using these Bosch EV14 injectors, 62 lbs, from FiveOmotorsports, and they've been fantastic. It's surprisingly hard to find true EV14's with the junior timer connectors.

https://www.fiveomotorsport.com/115u-je ... fzFfddPikm

The only mod I ran was 3bar adjustable fuel pressure regulator and Raptor 27/6 turbo. I never tried bigger injectors or to tune the chip.

Though I don’t use it anymore, I have always been curious how the MAP sensor was used. I could never find the answer.

[Damo]

Thanks for the excellent write up @Tom ! I've managed to create a custom 24 pin chip for my cammed 85.5 NA after starting with zero understanding of EPROMs.

I've only made some basic tweaks to the ignition table and reduced the closed loop RPM limit so far, but the car feels more responsive. I can see this being just the beginning so an Ostrich looks like it'll be worthwhile now.

[cmurphy034]

Amazing write up Tom. Seriously interested in doing the Ostrich 2.0 setup for my 1988 Turbo with the Focus 9 Tech DME. Do you know if the experimental KLR chip would be necessary if I’m running a MAP input to the DME or can I just basically do away with anything related to the KLR at all?

I would like to retain the stock cycling valve control but if not which boost controller do you recommend?

[Tom]

Amazing write up Tom. Seriously interested in doing the Ostrich 2.0 setup for my 1988 Turbo with the Focus 9 Tech DME. Do you know if the experimental KLR chip would be necessary if I’m running a MAP input to the DME or can I just basically do away with anything related to the KLR at all?

I would like to retain the stock cycling valve control but if not which boost controller do you recommend?

If you use the stock cycling valve, then you'd need to defeat the KLR's overboost system with the experimental chip. I only called it experimental because it hasn't been tested on a real car to my knowledge. It was done by @johnb, who has a very deep understanding of the KLR -- so I'd be quite surprised if it didn't work perfectly. I'd love it if you tried it and confirmed it worked so we could rename it. If you go for a boost controller instead, I'd just get a cheap manual black knob unless you can find an original Profec B (with the big solenoid). Both are simple and reliable. There are endless electronic boost controllers, but I've never had the patience to deal with all the programming...

[cmurphy034]

Amazing write up Tom. Seriously interested in doing the Ostrich 2.0 setup for my 1988 Turbo with the Focus 9 Tech DME. Do you know if the experimental KLR chip would be necessary if I’m running a MAP input to the DME or can I just basically do away with anything related to the KLR at all?

I would like to retain the stock cycling valve control but if not which boost controller do you recommend?

If you use the stock cycling valve, then you'd need to defeat the KLR's overboost system with the experimental chip. I only called it experimental because it hasn't been tested on a real car to my knowledge. It was done by @johnb, who has a very deep understanding of the KLR -- so I'd be quite surprised if it didn't work perfectly. I'd love it if you tried it and confirmed it worked so we could rename it. If you go for a boost controller instead, I'd just get a cheap manual black knob unless you can find an original Profec B (with the big solenoid). Both are simple and reliable. There are endless electronic boost controllers, but I've never had the patience to deal with all the programming...

Me neither for the programming lol. Is the tunerpro reading off the stock KLR boost sensor using this tune still? And is a MAP input through Focus9Tech or Rogue Tuning relevant to any of this? Thanks again

[Tom]

Me neither for the programming lol. Is the tunerpro reading off the stock KLR boost sensor using this tune still? And is a MAP input through Focus9Tech or Rogue Tuning relevant to any of this? Thanks again

Not sure I follow the first part of your question? Tunerpro just lets you program the chip. The KLR map sensor drives the dash gauge and is used by the KLR to manage the cycling valve and the KLR's error codes, etc. As best I understand, the MAP input on the F9/Rogue DME would not change anything -- that MAP sensor is used for logging and, if applicable, to provide extra input to the DME for their MAF and A-Tune systems. It's really just a convenient way to wire in the MAP sensor needed for those set-ups, but doesn't replace or affect the sensor in the KLR -- again, as best I understand the F9 anyway....

[cmurphy034]

Me neither for the programming lol. Is the tunerpro reading off the stock KLR boost sensor using this tune still? And is a MAP input through Focus9Tech or Rogue Tuning relevant to any of this? Thanks again

Not sure I follow the first part of your question? Tunerpro just lets you program the chip. The KLR map sensor drives the dash gauge and is used by the KLR to manage the cycling valve and the KLR's error codes, etc. As best I understand, the MAP input on the F9/Rogue DME would not change anything -- that MAP sensor is used for logging and, if applicable, to provide extra input to the DME for their MAF and A-Tune systems. It's really just a convenient way to wire in the MAP sensor needed for those set-ups, but doesn't replace or affect the sensor in the KLR -- again, as best I understand the F9 anyway....

I guess my question is more so does the DME chip have any direct reference to manifold pressure for the overboost protection you show in the YouTube video (and otherwise)? Or is that reading entirely handled through the manifold pressure reason the stock KLR sees? I believe you’re right that the MAP setup in the Focus 9 Tech DME is just an extra input to supplement the AFM reading and improve throttle response, etc.

And also another question, is the KLR chip you have in the downloads section specifically tailored to the carpokes performance chip or can that KLR chip be used for any tune I put onto the DME? And if I do use the KLR chip without an MBC or EBC is it now relying on the DME chip overboost protection alone using that “overboost” map you mentioned in the video?

Sorry for so many questions I appreciate the feedback.

[Tom]

I guess my question is more so does the DME chip have any direct reference to manifold pressure for the overboost protection you show in the YouTube video (and otherwise)? Or is that reading entirely handled through the manifold pressure reason the stock KLR sees? I believe you’re right that the MAP setup in the Focus 9 Tech DME is just an extra input to supplement the AFM reading and improve throttle response, etc.

And also another question, is the KLR chip you have in the downloads section specifically tailored to the carpokes performance chip or can that KLR chip be used for any tune I put onto the DME? And if I do use the KLR chip without an MBC or EBC is it now relying on the DME chip overboost protection alone using that “overboost” map you mentioned in the video?

Sorry for so many questions I appreciate the feedback.

The factory DME does not have any direct reference to manifold pressure for the overboost shown in my video. The video shows the DME's overboost map, which is actually triggered when engine's calculated load (as measured primarily by the AFM) exceeds pre-set thresholds. In other words, even though it is called an 'overboost' function, it is not actually monitoring boost. It's monitoring engine load as a proxy for boost. I don't know enough about the F9 MAF system to know if it incorporates its extra MAP sensor into the DME's overboost features, but I would be quite surprised if it did.

The KLR has its own, separate version of overboost protection that does use the map sensor in the KLR. It can trigger error codes and reduced boost pressure via the cycling valve when the actual boost exceeds pre-set thresholds, which is why you'd want the modified KLR chip if you are increasing boost but still using the cycling valve.

The experimental KLR chip available for download is not specific to the Carpokes performance image. You can tune your own DME chip however you want and still use that KLR chip. Keep in mind that the primary way to make more power via chip tuning is by tuning the motor for increased boost. So, if you want to keep the cycling valve and make noticeably more power, you'll need to find a way to increase boost without a boost controller. Back in the day, people would do that with a restrictor in the banjo bolt, shimming the wastegate, drilling a vent hole in the cycling valve, etc. -- none of which is particularly easier to install than a MBC -- and none of which offer any real control/adjustability over the amount of boost you get. Just something to keep in mind as you plot your course...

And, finally, yes, if you use the experimental KLR chip to eliminate the KLR's overboost protection, you will be relying solely on the DME's overboost protection -- or no protection at all if you max out the overboost tables in the DME chip. I'd hazard a guess that most modded 951's don't use either of the factory overboost protection features. Both are designed to prevent meaningful increases in boost/power, which is the whole point of tuning a chip.