Because I recently posted a response to it. I think it was with regard to the Brabus and the turbo it has making 86hp and the normally aspirated 71 hp engine having a higher compression ration due to it not having the added power created by turbo. I think the Brabus with 86 hp has 10:1 compression and the US model has 11.4:1. You would think that would be the other way around but as my memory can recall, the use of a turbo at the higher compression ratio of 11.4 may compromise the integrity of the engines lower end perhaps so they lowered that to be able to gain the benefits of the turbo. Not sure about this but it makes sense to me with my knowledge of engine design/building.Has anyone seen the specs on compression ratio? I suspect it's high to get the 71hp/1000cc, and hence the need for higher octane.
Excellent I idea...I would like to know more about this aswell. Like could a Turbo, Brabus Exhaust, or air intake give better gas mileage and increase horse power . PLEASE PLEASE LET ME KNOWI'm interested in the statement of mods to increase the gas mileage on the US car??
How about a new thread on mods that will increase the gas mileage, if we know them yet??
Not really. Most turbo cars have a lower compression ratio than their normally-aspirated counter-parts. With the heat build-up from the turbo, you have to worry about detonation.I think the Brabus with 86 hp has 10:1 compression and the US model has 11.4:1. You would think that would be the other way around .
I agree, I've never come across a performance mod that increases fuel mileage - most are out for more horsepower, which usually doesn't translate to more mpg's.Doesnâ€™t look like â€œBrabus-izingâ€ is the key to better fuel mileage: the â€™07 smart coupÃ©s Euro combined fuel mileages are 61PS â€“ 60.1; 71PS â€“ 60.1; 84PS turbo â€“ 57.6; and 98PS turbo Brabus â€“ 54.3 (all in Imperial gallons).
With fuel mileage such a deal in the U.S., you can bet that the smart designers have done everything practical to get the numbers up.
On the east coast, they lowered their top grade to 93 R+M/2 (PON).Rog..O. 11.4:1 for the 61PS and 71PS normally-aspirated gassers, and 10:1 for the 84PS and 98PS (Brabus) turbos.
BTW, the Brabus turbo is recommended to use 98 RON gas (about 94 PON here). Does Sunoco still sell 94 street gas?
On the MINI, some performance mods can lead to enhanced fuel economy as long as you can avoid the temptation of utilizing the additional performance. What's the likelihood of that?I agree, I've never come across a performance mod that increases fuel mileage - most are out for more horsepower, which usually doesn't translate to more mpg's.
Nothing will beat proper tire inflation and not having a heavy foot!
to my experience, most performance mods as those listed above lead to more horsepower and better "breathing", which usually equates to sucking in more gas too! my JCW mcs gets 3 - 5 mpg less for all its 30 or so extra horsepower.