Why you should go AccessPort with any sort of mods

[Chris@Hypertech]

i attached my most recent datalog which is also associated with the virtual dyno graph. but my datalog doesnt have the exhaust temp....i can add it.

If you are datalogging from the ECU, you won't have a reading for EGT's, or for pre-intercooler air temps. The factory ECU doesn't have sensors to measure these readings. You would need to install those sensors, and monitor them using the dyno's datalogging software, or an aftermarket datalogging system. This is what makes it difficult for most "do it yourself" tuners to know what is actually going on inside the engine.

 

[MSMS3]

Many OBD2 datalogging programs do have a calculated EGT parameter. This uses certain assumptions based on changes in data from the wideband sensor. While it is certainly not as accurate as a direct thermocouple probe in the center of the turbo housing, it is useful and reasonably accurate for these purposes.

It is certainly better than being totally ignorant of EGT's, and this is helpful in trending. The data would tell you whether EGT's are climbing under load and rpm or remaining stable. It would tell you whether EGT's are higher than with the stock flash, and if so, by how much. It would tell you whether a particular mod or fuel change raised or lowered EGT's, etc.

To me, if calculated EGT's get much higher than low 1500's at high rpm, high load conditions, then I would worry and seek solutions to bring then down, especially if coupled with leaner than stock AFR's. HT's rich high load high rpm AFR's and the cylinder cooling that comes from that seems helpful to me and allow very aggressive timing with virtually no knock retard showing up in the logging. Calculated EGT's are maxing out at 1510-1520 degree range, or at least that is the case for me.

As to pre-intercooler air temps, there is an ambient air temp sensor on our cars and an IAT sensor built into the MAF sensor, if I recall correctly.

 

[tfusch4]

Chris,

Is there any plans to add launch control and no lift shift feature to the HT for MS3's? Btw, I currently own a HT and I am very pleased with the results thus far. I would personally like to see this feature made available. My mods are minimal, Cobb SRI, Cobb TIP, Corksport TMIC, Denso ITV22's. The exhaust is 100% Stock. No complaints about the HT can tune. It has responded well with the mods listed.

Respectfully,
Tim

 

[MSMS3]

You can safely FFS this car at 5,800-6,000 rpm. It has a soft rev limiter. With practice it's pretty easy. I have done it maybe a hundred times or more with no negative effect at 70,000 miles. But launch control would be nice.

 

[tfusch4]

You can safely FFS this car at 5,800-6,000 rpm. It has a soft rev limiter. With practice it's pretty easy. I have done it maybe a hundred times or more with no negative effect at 70,000 miles. But launch control would be nice.

Yeah, I've FFS mine on many occasions as well with no I'll effects to date. It would be a nice feature which I think is well within the realm of HT capabilities. There may not be enough interest for HT to spend the time and effort to do it though.

 

[Chris@Hypertech]

Chris,

Is there any plans to add launch control and no lift shift feature to the HT for MS3's? Btw, I currently own a HT and I am very pleased with the results thus far. I would personally like to see this feature made available. My mods are minimal, Cobb SRI, Cobb TIP, Corksport TMIC, Denso ITV22's. The exhaust is 100% Stock. No complaints about the HT can tune. It has responded well with the mods listed.

Respectfully,
Tim

Hi Tim,

Unfortunately, we aren't going to do a launch control for the MS3. That may lead some customers to believe that the abuse to their car using this feature is OK and that any breakage incurred using it would be covered under the OEM warranty or by Hypertech. It is definitely a cool feature, and could be useful, but at some point we have to ask whether we should, not just whether we could. Hope you understand. We're all for enjoying these hot rods, but we just don't want to cause issues that would have serious backlash for us or Mazda.

Chris

 

[tfusch4]

Chris, I appreciate your honesty and HT's stance on keeping things within the realms of reason on the MS3 platform and thank you for your prompt response.

 

[tfusch4]

You can safely FFS this car at 5,800-6,000 rpm. It has a soft rev limiter. With practice it's pretty easy. I have done it maybe a hundred times or more with no negative effect at 70,000 mile. But launch control would be nice.

How are you keeping the CEL's from popping up with the catless downpipe? Are you running an O2 sensor extension device?