TFL in general is quite incompetent. They originally thought the CX50 in camo was the cx60. The car had the front brake caliper on the front of the rotor, this always fwd. With regards to the straight 6, it makes 60 more hp because of premium, another stupid assertion on their part. If you look at after market ecu tunes the difference between 91 and 93 octane is 4% more hp, or 2% per point on octane. The 340 hp tune is for 91 octane since 93 is not available everywhere. So going from 87 to 91 should give you about 8% more power or 22 more hp not 60. Even if the 340 hp tune is on 93 that would put you at around 312. With the 340 hp version putting out only 103 hp per liter ( very low by turbo standards ) Iam surprised it requires premium. I suspect the turbos are the same size and the boost psi is little different. The boost must be real low, What supprises me is the premium s turbo is $7500 more than the regular premium model. The standard equipment is very similar, the s has some options the non s has and visa versa. The difference of not being the adaptive headlight on the s type. So you are paying about $7000 for a different ecu tune which costs Mazda nothing. This is bad marketing move for Mazda they could have really differentiated themselves from the competition by having the 340 hp with a 93 rating and 87 rating like they do in the 2.5 turbo.
I6 differences?
So there was an article posted by TFL saying the 2 - I6 variants are mechanically identical and the hp/tq rating difference is only due to premium vs regular fuel.
Any way to confirm this as it seems hard to believe. I would assume there are pressure differences between the turbos or something in the computer programming.
I know someone had access to the parts diagrams. Are the turbo units the same part numbers between S and non-S variants?
Any way to confirm this as it seems hard to believe. I would assume there are pressure differences between the turbos or something in the computer programming.
I know someone had access to the parts diagrams. Are the turbo units the same part numbers between S and non-S variants?
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One other thought. The 2.5 turbo puts out 12% more horsepower on 93. That would make the 280 hp 313. Now the non s is 190 lbs lighter than the type s and at its current power to weight ratio it takes 15 hp to lug around that weigh. Add this to the 313 you now have 328 hp. Paying 6k to 7k for 12 hp is a bad move.TFL in general is quite incompetent. They originally thought the CX50 in camo was the cx60. The car had the front brake caliper on the front of the rotor, this always fwd. With regards to the straight 6, it makes 60 more hp because of premium, another stupid assertion on their part. If you look at after market ecu tunes the difference between 91 and 93 octane is 4% more hp, or 2% per point on octane. The 340 hp tune is for 91 octane since 93 is not available everywhere. So going from 87 to 91 should give you about 8% more power or 22 more hp not 60. Even if the 340 hp tune is on 93 that would put you at around 312. With the 340 hp version putting out only 103 hp per liter ( very low by turbo standards ) Iam surprised it requires premium. I suspect the turbos are the same size and the boost psi is little different. The boost must be real low, What supprises me is the premium s turbo is $7500 more than the regular premium model. The standard equipment is very similar, the s has some options the non s has and visa versa. The difference of not being the adaptive headlight on the s type. So you are paying about $7000 for a different ecu tune which costs Mazda nothing. This is bad marketing move for Mazda they could have really differentiated themselves from the competition by having the 340 hp with a 93 rating and 87 rating like they do in the 2.5 turbo.
Then why does Mazda's own 2.5 turbo put out 227 on regular and 256 on 93. You obviously do not understand tuning of turbo engines. As it has been said before, higher octane fuel allows the car to not taper off as much boost pressure as the rpms's go up. There is something called DAM (dynamic advance multiplier) when the ecu senses potential knock it pulls timing. Mazda's 2.5 puts out the same 320 ft lbs on both fuels which tells you the boost is the same on both fuels. So the hoespower increase is all due to 93. The only real difference between premium and regular fuel is the temperature which it ignites.I disagree that the 280 HP engine will make more power on 93. The engine electronics would have to allow changes to cam timing, etc. They rated it for regular unleaded and I’d bet they did it on purpose to differentiate it from the S engine.
Not completely accurate The premium plus on the regular and s type both have nappa leather and all those other things other than the adaptive headlights do not add up to hardly any $ to Mazda. $7000 more minus adaptive headlights is a lot for a different ecu tune that cost nothing.There are other differences between the base model and the S. The S has the following over the base model (both in Premium Plus trim):
- adaptive headlights
- body color wheel moldings
- wheels are upgraded on the S to the pictured black/shiny finish
- second row console
- ventilated second row seats
- Premium Nappa leather
- a larger fuel tank
We can go on with this forever. A fuel becomes unstable when it heats up and ignites, therefor high octane ignites at a higher temperature as I said and is more knock or detonation tolerant.
Also, all modern cars have knock sensors where they can control timing, you are hung up on the acronym rather than the purpose of the whole conversation.
Also, all modern cars have knock sensors where they can control timing, you are hung up on the acronym rather than the purpose of the whole conversation.
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