Chris@Hypertech
Member
Mazdaspeed Tuning Info Part 1
The following is some specific information about our tuning, with attached graphs. This should help answer some of the questions presented on this thread. The graphs have some additional explanation about the data presented.
We don't usually have requests for detailed information about our tunes. Typically, this is not something we publicize, but due to the level of questions I was getting about our tuning, I felt like it was appropriate to share this info with everyone.
Here goes!
How much boost are we running? - 1_HowMuchBoost.jpg
On a stock car, we measured a peak of about 17.5psi with the Hypertech tune, while the stock tune peaks at about 14.5psi. This was measured in 4th gear on our AWD Superflow dyno.
What are the intake air temps at this boost? - 2_IAT_Temps.jpg
During the same dyno pulls, we measured a peak-to-peak increase of about +24F pre-intercooler, and about +19F peak-to-peak after the intercooler. These temperatures were measured with a fine gauge thermocouple that reacts much faster than a typical intake air temp sensor, so dont be surprised if these numbers are slightly different than what you measure with a datalogger. Our readings should be worse, if anything, during a similar test. This JPG does have an inset picture of the sensor we use, but it is still hard to tell that the sensor consists of two hair sized wires.
How hot are the EGTs with the tune? - 3_EGTs.jpg
During the same dyno pulls, we measured an increase of about +34F, peak-to-peak over stock. This doesnt sound like much, but the EGTs are right at 1500F which is pretty hot when wide open. The factory tune didnt leave much room for us to make a tune that wouldnt cause problems in the long run. The power gains we got with only a +34F increase is really nice.
One thing to note is that we probably use a slightly different temperature sensor than most people are used to. We use a small wire, exposed junction thermocouple for our dyno tuning. These are much more responsive than a typical thermocouple sold with aftermarket gauges because the mass is much less (heats up quicker). This allows us to see quick changes in EGTs and have better insight as to what our tunes are doing during development. The downside to a fast probe like this is that they are fragile. If you have an aftermarket gauge your numbers may not match ours exactly due to the differences in probes and equipment.
How about more boost? - 4_More_Boost.jpg
The boost curve the Hypertech tune was developed through extensive testing, and during some of that testing we tested a tune that maintained the boost pressure all the way to redline rather than dropping off in the higher RPMs. The overboost tune pushes boost up another 2psi and the result is about +50F and only +9HP. The final Hypertech tune increases boost 4psi over stock at the same point and only bumps EGTs +35F and makes +59HP. That additional 2psi just isnt worth it. Theres a lot of info on this JPG explaining what we measured.
The following is some specific information about our tuning, with attached graphs. This should help answer some of the questions presented on this thread. The graphs have some additional explanation about the data presented.
We don't usually have requests for detailed information about our tunes. Typically, this is not something we publicize, but due to the level of questions I was getting about our tuning, I felt like it was appropriate to share this info with everyone.
Here goes!
How much boost are we running? - 1_HowMuchBoost.jpg
On a stock car, we measured a peak of about 17.5psi with the Hypertech tune, while the stock tune peaks at about 14.5psi. This was measured in 4th gear on our AWD Superflow dyno.
What are the intake air temps at this boost? - 2_IAT_Temps.jpg
During the same dyno pulls, we measured a peak-to-peak increase of about +24F pre-intercooler, and about +19F peak-to-peak after the intercooler. These temperatures were measured with a fine gauge thermocouple that reacts much faster than a typical intake air temp sensor, so dont be surprised if these numbers are slightly different than what you measure with a datalogger. Our readings should be worse, if anything, during a similar test. This JPG does have an inset picture of the sensor we use, but it is still hard to tell that the sensor consists of two hair sized wires.
How hot are the EGTs with the tune? - 3_EGTs.jpg
During the same dyno pulls, we measured an increase of about +34F, peak-to-peak over stock. This doesnt sound like much, but the EGTs are right at 1500F which is pretty hot when wide open. The factory tune didnt leave much room for us to make a tune that wouldnt cause problems in the long run. The power gains we got with only a +34F increase is really nice.
One thing to note is that we probably use a slightly different temperature sensor than most people are used to. We use a small wire, exposed junction thermocouple for our dyno tuning. These are much more responsive than a typical thermocouple sold with aftermarket gauges because the mass is much less (heats up quicker). This allows us to see quick changes in EGTs and have better insight as to what our tunes are doing during development. The downside to a fast probe like this is that they are fragile. If you have an aftermarket gauge your numbers may not match ours exactly due to the differences in probes and equipment.
How about more boost? - 4_More_Boost.jpg
The boost curve the Hypertech tune was developed through extensive testing, and during some of that testing we tested a tune that maintained the boost pressure all the way to redline rather than dropping off in the higher RPMs. The overboost tune pushes boost up another 2psi and the result is about +50F and only +9HP. The final Hypertech tune increases boost 4psi over stock at the same point and only bumps EGTs +35F and makes +59HP. That additional 2psi just isnt worth it. Theres a lot of info on this JPG explaining what we measured.
