View Full Version : ATS Racing Rom Tune Group Buy

11-09-2005, 07:14 AM
For the first time ever ATS Racing is offering group buy pricing on our popular ROM TUNES.

The pricing grid looks like this:

5-9 $700 plus free shipping ($25 value) and free DUAL MAP Upgrade ($50 value)

10-19 $650 plus free shipping ($25 value) and free DUAL MAP Upgrade ($50 value)

20+ $600 plus free shipping ($25 value) and free DUAL MAP Upgrade ($50 value)

Early ST185's with single board ecus will require an adapter board for $75 additional. If wna to know what you have, that the 4 screwa out of the case and pull the lid off (the side with the part number on it) and compare to the pics here:


The one labeled 90 JDM is an example of a single board ECU.


Who is ATS Racing? We are the country's only full service MR2 specialist. We are a repair shop, modification shop, manufacturer, and retailer of exclusive MR2 items like sport turbos, turbo kits, and ECU's. We also are a complete tuning shop with a Dynojet 248C.

What is a ROM TUNE? If you come from the domestic world it is usually called "chipping" the ECU. The Toyota ECU is fairly complicated with the CPU and rom (read only memory) being housing in one unavailable chip. Techtom however designed a solution several years ago called a daughterboard. This allows us to place the ROM outside the CPU, and allows us to change certain parameters inside the ecu.

OK, that meant nothing to me, what parameters are you talking about?
Here are the major benefits of the ROM TUNE:
1. eliminate fuel cut(s) (some MR2 ecu's actually have three fuel cuts)
2 eliminate speed cut (if applicable)
3. raise rev limiter
4. complete control of ignition timing table
5. unlocks factory "high boost" maps inside ECU
6. control of fuel table
7. more consistent behavior

Thats great, can you put a actual horsepower number on it?
YES. Multiple back to back dyno tests have shown gains of 17horsepower and 16 lb feet of torque on BONE STOCK MR2's. Plus turbo spool was 200rpm sooner.

What about modified cars? We installed a CT27 turbocharger on the same car tested above and A/B testing with the stock ecu showed a 22hp gain and 20lb ft. of torque with the ATS ROM TUNE.

Are these generic tunes? NO, each tune is based your YOUR PERSONAL modifications.

What about larger injectors? ATS can tune higher horsepower cars with CT27, TD05 or TD06 turbochargers to use 550cc injectors. The cost for this is $100 additional.

What if I change my modifications, will I need a retune? Minor modifications like intake, ignition or exhaust will not require a retune, however modifications like turbochargers, camshafts should. The cost for retuning an ATS ROM TUNE is $150.

Do I have to send my ecu in advance? It helps, however we do have an exchange program available in limited numbers. We will need your ecu back IMMEDIATELY after you receive your ROM TUNE so that we can turn around to rom tune others.

OK, I'm in for sure, but what is the time frame of this group buy? This GB will be open for the month of November. The rom boards come from Japan, but usually take 1-2 weeks. We expect to have everyone taken care of by Christmas.

More information is available here: http://www.atsracing.net/atstunedrom.htm

Please start the order list below.


11-09-2005, 08:07 AM
I'll be interested in this come march or april.. I'd rather not upgrade during winter.. Would it be harmful to tune for the ct27 before you get the ct27?

11-09-2005, 01:09 PM
It is safe to run a CT26 on a CT27 tune, but not optimal.


11-21-2005, 04:02 PM
We got 5 confirmed orders and we might make it to 10!


07-07-2006, 12:32 AM
:| sick. now all i need... is a gte... -sigh-

11-30-2007, 02:54 PM
I might want to jump in on this..

I will have to double check my board.. believe it is a single.

After messing with a few standalones on other vehicles and understanding my requirements out of a daily driver, I believe this is a great solution!

12-28-2007, 07:14 PM
Has anything moved forward on this? I'm very interested in a Rom tune on the ATS FPR, ATS bored rail an CT27 & staggered cam setup.

Thank you

12-29-2007, 04:46 AM
This thread is over 2 years old...

12-29-2007, 07:35 AM
This thread is over 2 years old...

hahahahaahahahahahahahahahahahahahahah............ .


12-29-2007, 11:20 AM

12-29-2007, 05:14 PM
Yes.. notice my original post in this thread is on 11-30-2007, not that old. I never realized it then either lol