I have also tried the 9r05. The trucks surges pretty bad while under light throttle just like the 9r04 version did for me. With both of these it is the 100hp tune that causes the problem, not the other two. When I use the 9r03 there are no problems with any of the tunes.

Thanks Mike. You guys are awesome!

I'll be watching my email

Thank you for responding. I usually use the economy tune. I feel like the 9R04 tune gives better throttle response and I believe better fuel economy. So I would rather use the latest tune but R20 does work well for me. I would really like to try the 9R04 performance tune.

thanks again

Come on DS guys????

I am posting a problem with your product.

It has been a week now since my first post.

I called you guys once with the problem already, I was told to wait 2 days until the next revision comes out. YEAH RIGHT!!

I know you guys stay busy, that is why I have waited patiently for ...

DS?............please respond

thanks mike

I updated from the R20 to the current 9R04. Here are the problems that I encountered and the comparison to the R20. I would also like to say that I've never had any problems with the R20 and would like to go back to it since I still have it on my laptop.

The 9R04 Towing tune doesn't seem to have ...

My question is:

Should I update to the 9R03 for the U7157? Are there tune changes or is it updated to be used on some of the new Rangers?

Thank you for your response.

here are the pictures of the block off plates, you can see the round plate that is installed that will block the entrance and the oval shaped plate that will block the exit side.

You can buy a EGR delete kit for around $700.00, or you can do it yourself for almost nothing.

Remove your EGR cooler and put a block off plate where the exhaust comes into the cooler, then put another block off plate where the exhaust would exit the cooler. Use some high temp silicone on the exit ...

What is the year and motor of your vehicle?

Is there any difference between these tunes? 9R03 & 9R04

I am currently using the 9R03, I will update if there is an differce in power, fuel economy, shift pattern, etc.

Your reply will be greatly appreciated

Are there benefits with the R03 vs. the R20? If so, what are they? The R20 works fine for me but the MPG's are still a little low. Thanks for your reply

Will the U7157 correct the speedo after a tire size change?

Will the U7157 correct the speedo after a tire size change?