Drivetrain ALTA's GP meets the Unichip and gets 12WHP and 8ft-lbs

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Jun 4, 2008 | 09:37 AM

#51

Guest

6th Gear

Joined: Aug 2005

Posts: 3,902

Likes: 2

From: SoCaL (Agoura Hills)

Quote:

Originally Posted by ADAMSALTAMINI

Hey rusty, did you notice that Jeff made that post before CHRISTMAS LAST YEAR!!!!!

Some of your graphs are from three weeks ago, one from november (might have been posted but....) and another the tail end of December 07. So a bit hard to poke fun at a guy who can't predict the future.

With that being said, we are super excited to see gains like that. Way to go Jan!

Didn't see that, there were still quite a few dyno's up IIRC though. Including mine!

Jun 4, 2008 | 12:24 PM

#52

billzcat1

3rd Gear

Joined: Oct 2007

Posts: 269

Likes: 0

From: Everett, WA

Quote:

Originally Posted by 70spop

My car feels really heavy to me right now - like I really have to bury the pedal to get it to really move, and even then it doesn't have that eager feeling that I remember it having when the JCW was new. Power delivery is also very uneven at anything less than foot-to-the-floor. (Not related to software so much, but I'm getting pretty regular yoyo-ing - I may be revisiting the DT bpv, at least the heavier spring)

Try some basic maintenance first - change SC belt, spark plugs, and intercooler couplers (I have/like the Alta ones). Even at 25,000 miles I found this made a palpable difference in power and driveability and was ~$80. I honestly think the lion's share of the improvement came from the belt. All belts stretch in time and proper belt tension is key to power transfer from crank to supercharger. If nothing else... go for the $20 belt change.

Jun 4, 2008 | 09:13 PM

#53

ADAMSALTAMINI

Former Vendor

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Joined: Jun 2007

Posts: 3,155

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From: Oregon

Quote:

Originally Posted by billzcat1

VERY TRUE! Plus many clients that experience nosing off in power is related to either leaky boots, OR bar bypass valves. Both of which are inexpensive and easy to fix. A boost gauge installed earlier in the cars life, makes diagnosing these types of problems easier as you can see the boost tapering over time.