Drivetrain ALTA "complete package"
ALTA "complete package"
I know that the "sum of parts ≠ individual parts" necessarily when adding product upon product, but does anyone have an idea how much power the "complete" Alta kit might make? Seems like there are enough people on here with all the goodies that someone could find out. Also, if I add things up correctly it looks like it costs $4037 for "everything". It sure would be nice if Alta would offer a discount price for the package! Unless I'm missing something, all the performance parts consist of:
ECU
Intercooler
CAI
Catback Exhaust
Downpipe
Panel Filter
Boost Tube
Inlet Hose
ECU
Intercooler
CAI
Catback Exhaust
Downpipe
Panel Filter
Boost Tube
Inlet Hose
Yeah you don't need the panel air filter when you get the CAI as it replaces the entire unit......but with everything you'll be at approx. 220ish WHP and 265ish WTRQ.....so she'll be pretty quick.
And how much WHP and WTRQ can you expect if you went with the JCW engine kit instead (I don't think I'd go that way anyway, epecially since the Alta turboback sounds soooooooooooo good).
I believe it would be 192 or 189WHP and 199WTRQ.....but might need some dyno results to back that up....either way, the Alta stuff will make waaaay more power.
At the wheels, my JCW put down 180whp and 206lbft of torque. Check my gallery for the chart. A conservative adjustment for driveline loss (12-14%) puts that waaayyyyyy above what MINI was telling us the kit would produce (204-209bhp).
Granted, WHP is the figure you want to see IMO. Speculating driveline loss to estimate crank or brake horsepower just gets confusing. You can fudge the crank/bhp figures quite a bit just by factoring in an additional % or two.
That said... here's Alta's chart showing gains for pretty much all the parts you listed (and I'm 99.999% sure Alta always uses whp figures):
"The information below shows dyno charts with ALTA hardparts (Turbo back exhaust, intake, front mount intercooler, boost tube upgrade and inlet hose) and OEM ECU Tune, UNICHIP base map, and finally the ALTA specific map custom tuned and tailored."

It suggests that the green line is OEM with all thier hard parts... Green line is all the hard parts with Uni-chips ECU... and the blue line is all the hard parts and Alta's custum tune. I get it. So assuming these are wheel horsepower numbers... Altas tubo-back, intake, FMIC, and tubes will make about 20whp & 22lbft over the JCW Engine kit (very nice)... with the custum ECU tune 40whp and 59lbft (WOW!!!)!!!
I'll be doing Alta's intercooler and silicon tubes this spring. I'll post charts again once it's done. I think a downpipe (possibly Alta) is in the distant future... with some suspension work taking priority. We'll see.
Last edited by msh441; Jan 5, 2008 at 08:56 PM.
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My car has the JCW kit and the Alta modifications....I can't be happier with the results and I believe the JCW ECU has adapted to its new found ability to breath.The car with the engine and suspension modifications is just fun and fast and I guess that's the bottom line for me.I really don't understand all the charts,but I do understand how much I enjoy driving the car
That said... here's Alta's chart showing gains for pretty much all the parts you listed (and I'm 99.999% sure Alta always uses whp figures):
Any others have a different interpretation or more accurate information?
That said... here's Alta's chart showing gains for pretty much all the parts you listed (and I'm 99.999% sure Alta always uses whp figures):
It would be interesting to see if any of the Alta add-ons improves the JCW package.
That's my interpretation. Anyone have a different read or more factual information?
I agree with you 100%. It says flywheel??? The text you see on the site says WHP typed in over the graph. Which is it a wheel dyno or a engine dyno? If it is a wheel dyno then the stock S is making 170 hp at the wheels??? I believe it must be a motor dyno only. If that is the case you must reduce the gain numbers at the wheels by 10-15%.
I agree with you 100%. It says flywheel??? The text you see on the site says WHP typed in over the graph. Which is it a wheel dyno or a engine dyno? If it is a wheel dyno then the stock S is making 170 hp at the wheels??? I believe it must be a motor dyno only. If that is the case you must reduce the gain numbers at the wheels by 10-15%.
Alta Mods (CAI+ FMIC+Turbo Back Exhaust+Boost Tubes+Inlet Hose) + OEM ECU = 192 WHP using a Dynapack Type Dyno!
Edit: Dyno run performed on Friday 1/4/2008. Will post later in the week(Fri). Travelling this week
Edit: Dyno run performed on Friday 1/4/2008. Will post later in the week(Fri). Travelling this week
Last edited by KNTRKTOR; Jan 6, 2008 at 09:41 AM.
Almost 30 short of what's in the above graph, no? How's the Tq looking?
EXCELLENT POINT! (Less expensive to reach the same amount as JCW if you want.)
The header at the top of each graph reads "flywheel torque; flywheel power" respectively. At the bottom are the corrected numbers (in the yellow highlight) Torque=198.6, power=198.5. That is the way that I interpret the picture. It that is correct, then not much different than the JCW package (and you get the full warranty).
Any others have a different interpretation or more accurate information?
Any others have a different interpretation or more accurate information?
I agree with you 100%. It says flywheel??? The text you see on the site says WHP typed in over the graph. Which is it a wheel dyno or a engine dyno? If it is a wheel dyno then the stock S is making 170 hp at the wheels??? I believe it must be a motor dyno only. If that is the case you must reduce the gain numbers at the wheels by 10-15%.
Thanks for asking!
Sorry for the confusion!
My car has the JCW kit and the Alta modifications....I can't be happier with the results and I believe the JCW ECU has adapted to its new found ability to breath.The car with the engine and suspension modifications is just fun and fast and I guess that's the bottom line for me.I really don't understand all the charts,but I do understand how much I enjoy driving the car
Quote:
Being 30hp less would be consistent with the graph indicating bhp, not whp ( 220 dyno hp (bhp) x est 14% (powertrain loss)= 30.8hp. Therefore whp= 220-30.8 or 189.2 whp).
I don't doubt (too much) that the modifications make more power (which would be expected with a booster engine), but I am yet unconvinced that the power gains are as much as touted. I am not an expert on the subject, but I am educated and can read data (I think...). It would seem to stand to theoretical reason that the biggest gain (outside of a bigger turbo) would occur with an increase in boost pressure (coming from either the Alta or JCW remapped ECU). Remember that the engine power is depended on combustion, so if you increase air + fuel density, then a "bigger" explosion occurs and therefore more power is generated.
Oh, and BTW Adam: (where are those gauge packages, anyway? )
Not a rabble rouser, just a careful consumer.
I don't doubt (too much) that the modifications make more power (which would be expected with a booster engine), but I am yet unconvinced that the power gains are as much as touted. I am not an expert on the subject, but I am educated and can read data (I think...). It would seem to stand to theoretical reason that the biggest gain (outside of a bigger turbo) would occur with an increase in boost pressure (coming from either the Alta or JCW remapped ECU). Remember that the engine power is depended on combustion, so if you increase air + fuel density, then a "bigger" explosion occurs and therefore more power is generated.
Oh, and BTW Adam: (where are those gauge packages, anyway? )
Not a rabble rouser, just a careful consumer.
I pmed Adam earlier. The number in yellow is the stock ecu plus the parts. The number in green is with the alta tune ecu plus the parts. The "Alta R56 Yellow" means Alta's yellow R56 test mule. Whp/WTRQ is stated on the graph as Adam and others have said.
Last edited by jcap287; Jan 6, 2008 at 04:08 PM.





