thats good news. any general numbers as far as HP and price go?

 

Ahhh...so I'll be able to buy the ecu tune next month, not just get specific info on it???......so I'm guessing the custom maps for people like me, with other Alta mods, would be sold like the custom maps for the subarus using the access port, like a separate $180 or whatever amount........this is gonna be sooo sick!!!!!

 

Adam. Put me on the "list" right after mikeg4572 and scott48 PLEASE !

 

I thought majority of new engines have Wideband O2 Sensor stock? My Acura RSX has them.

 

More info coming soon folks. Sorry for remaining aloof. We were instructed to do so.

Thank you again.

Adam@altaminiperformance.com

 

Would Alta offer ECU tuning for R56 auto tran in the future?

 

We will certainly try if the demand is high enough!

 

HP is a product of the tune you put on a car with X spec Octane. If the tune you put on a car takes into account the octane utilized then it will make more power. Just because you put a higher octane in an engine on the same retarded ignition tune does not mean you will make more HP. In fact you may loose HP with a higher octane rating due to the slower "retarded" flame front. Given the retarded ignition timing that the R56 utilizes this makes perfect sense. That is until the timing is advanced. Ideally Helix wants the west coaster to be able to have gains with their available octane so they are testing on 89 octane. My previous post was seat of the pants and not dyno proven. Anyhow they are wrapping up the packaging and will be ready for delivery soon. :impatient

Right now there is a fork in the road. Do they want to take control over boost entirely and make gobs of power or do they want to leave the ECU saftey factors in place and leave the ECU's control intact. Helix's feeling is to leave the ECU in the loop for the stock tubo maps and go ***** to the wall with the bigger turbo.

 

Not to divulge some things we are working on, but a bigger turbo with the same boost levels doesn't get you very far. A bigger turbo runs more efficient, so it will make more power. But because it flows more air and more efficient air at upper RPMs, it make more peak power, at the expense of loosing some low end. If you add the benifit of adding more boost, then things really start to work well.

An example is the stock turbo running 14psi is probably 60% efficient at redline, and flowing 25lbs-min of air. Put on a bigger turbo running the same boost, and it could be 70% efficient. Meaning cooler charge, and more power. Its not flowing anymore air, its just more efficient. While the change in temp might make up for In order to really get more power, you need more boost.

So you will NOT see ALTA running stock boost levels on our turbo kit. At least we will not be leaving it there
This is no way to get the BIG power people want.

 

You can't make a blanket statement like that, a bigger turbo with a more efficient turbine section can run alot less boost(boost is a measure of restriction) and make more power(power = CFM airflow) the increase in efficiency of a larger more efficient compressor and turbine leads to a denser charge(more cfm) at the same boost levels.

 

Jeff isn't arguing the point that you appear to be defending. We AGREE that a larger turbo running less pressure can provide the same level of HP (if not more) than a smaller one. BUT, with the denser charge, the larger volume, and additional fuel MORE HP can be gained, the energy required to spool the larger turbo is vastly different.. I think what Jeff is trying to say is that the ALTA larger turbo for the R56 will be best combined with the more aggressive ECU tune to help make up for a potential 500 rpm loss in spool time required by a larger turbo. No-one wants to see a loss in HP or TRQ anywhere in the RPM band. A larger turbo without proper tuning, could certainly result in that! Regardless the ALTA R56 Turbo Upgrade will be tuned accordingly!

Hope that helps clarify. Of course if not, let us know! We are always happy to help!

Thanks for the reply!

 

Yes it can be a blanket statement to get people to understand our angle. There are hundreds of things that play into the power a car makes, which we could go on and on about, but it will confuse and muddy our point.

Your point about a bigger turbo making more power at the same boost level is correct. But given the same lbs-min of air flow a 1.6L has at 14psi and 6500rpm, that change in HP is from more efficient compressor wheels, and freer flowing turbine wheels, is small. The stock turbo is too small to flow enough air to make more than 14psi at redline, where a bigger turbo can flow enough hold 18-20psi across the RPM band. That is where you make the big power. More boost, more torque, more power.

Our point is a bigger turbo at the same boost level, will make more power, but its not being used to its full potential. My experience with bigger engines, and bigger turbos running the same boost shows this. While it might add 10-15WHP, the big gains are from running more boost.

Sorry i missed the other point about a bigger turbos freer flowing turbine will add to that power. We are not trying to argue, just make our point. Everyone has their own ideas how things should be done, and we all will be making more power with these turbo Minis when we get bigger turbos installed. Lets see who can break 300WHP first!