On Monday I had my car tuned by Jan along with MJCMini - we were the only ones that could make it, it seems.

Dynoing was an interesting experience. Very loud. Cool to see my wheels spinning at 90+ mph only feet away.

It also seems that my Alta OCC is being imploded by the vaccuum, it would twist as it was sucked down. Jan said he'd never seen one do that before. I'll be getting a metal one.

At any rate, my car's power delivery is now smoother, the A/F ratio is no longer uber rich, the throttle body has been made to react more directly with the pedal, and the traction control has been made less intrusive.

The highway ramps northwest of town have never been more fun.

 

Nice meeting you and Matthew yesterday

Finally made it out of Denver today

Heading out to CT tomorrow at 6:45am

let me know how the catch can works out

 

Grats on tune nabe. I agree dyno tuning ftw! Let us know what OCC you go with. It is something I have been thinking about myself

And yes, on ramps are a blast!

 

Hey,
Just in case you didn't already know, Alta's OCC come with a metal insert that goes inside of the blue silicon body and then an aluminum top and bottom plate that meet up with both ends of the metal insert so you essentially have a metal can but with a nice colored silicon outer body. I believe that is a revision from the original setup but I could be wrong. Hope this helps ya out a little bit.

Steve

 

Yes.....call Alta and see if they still offer this fix. Other wise go for one the ebay knockoffs.



This pic shows the Alta and a hard can installed. The Alta was removed soon after this as it really wasn't doing anything.

 

yeah I only have one Alta can and its installed where your hard blue can is located. Two weeks now and not really filling up much yet. Some people were saying emptying every fill-up but there is hardly anything in mine after about 4 tanks so scratch that idea!!

 

How much you get really varies from car to car. Some need to empty it like has been suggested to you, some only need to do it once or twice a year.

 

In the photo with two CCs, you need the blue one with black lines, and you really don't need the one with red lines. There's a sticky on OCCs I believe--full of good information and diagrams, too.
It would be rare to have to empty the can every fillup--geez what a pain. I do it every 6 months and get about 1" of liquid out, maybe a little less. It all depends on how much oil is getting vaporized in the cam cover, I guess.

Hey Nabeshin, did I miss the dyno plot--or did you post it elsewhere? Always fun to see what magic Jan can perform on our cars.

 

I never posted a dyno plot. They only gave me a printout at the shop. Besides, comparing numbers is meaningless unless they were both on the same dyno. I will say that the torque curve is flat, and horsepower rises steadily to redline. MJCMini's numbers came out about the same (similar mods) and the discrepency was explained because of the different gross weight estimate.

I'm not sure which OCC to go with, but I know I want a metal one. Simply reinforcing this hoze type can is not an option since there is a major surface gash were it rubs against the frame by the hood latch. Not all the way through but Jan did say I might have a boost leak caused by this and the thing's imploding nature.

 

will be joining the tuned in 20 days, but who's counting
btw, i have the gt tuning occ which is quite bullitproof and scores serious bling points http://www.gtt.uk.com/parts1.asp

 

I understand this, but having had a Jan/RMW tune, I know that Jan does a baseline dyno pull, then starts tuning. So you must have a "before and after" dyno plot, or at least numbers for HP and TQE. I have seen many posts showing 20+ in HP and 10+ in TQE as a result of Jan-magic. I just wanted to know how much magic you got, that's all.

 

Oh that's right . Not only does RSR Racing run RMW race headers on all three cars but RMW "Tune's" all three cars as well . It's awesome to see how much faster they are this year.

Give em hell this weekend RSR .

Longboard

 

It only shows the final run on it. I'm pretty sure that base was 161 hp and 140 ft-lbs right before Jan added the new map, and it ended up with 165 hp and 146 ft-lbs. But in various calibration pulls it said 170hp and then 140 hp.

I'm not sure what MJCMini's base numbers were, but I think he ended up with 175 hp and 155 ft-lbs. They used 2850 lbs as the vehicle weight for his car, and they used 2750 lbs for mine.

I do not know why they changed the weight estimation because I was on my test drive when they started his car. This accounts for the discrepency, apparently.

 

What kind of dyno was it?

 

Thanks for the info, nabeshin. It's interesting that different tuners use different weights for the dyno calculations. I don't know what Jan entered for my car down in Dallas, but Jason entered 3000lbs to the Mustang dyno in El Paso. Since my car weighs 2500lbs, then add me (180) and half a tank of gas (35) it can't weigh more than 2730.
I don't know how this affects the number the dyno spits out, or the shape of the plot.

 

The Dynopak dynos don't req. this info do they?

 

I was actually going to ask that question too. As I said, when I got a RMW tune, it was on a DynaPak, and I don't recall Jan mentioning vehicle weight. But Jan is a quiet man, and just goes about his tuning without much chit-chat.
Vehicle weight shouldn't make any difference on the actual dyno, as the vehicle is static. I guess it's used, like altitude is, to adjust the measured number to an estimate of the actual on-road, real world, dynamic performance of the car.

 

I would think it would be necessary for a roller dyno. It probably needs to know the weight so it can calculate the axle weight for some reason. I don't think it would be needed to determine hp, but maybe for acceleration times?

 

Oh, it was a mustang dyno.

 

Hey, I just thought of something I neglected to ask during the tune. I think I know the answer though. Now that the car is running less rich, the emissions are cleaner, I would think. If in the future I live some place with emission tests, would the car pass ok? I'd probably have to go back to the stock intake to pass visual. My pulley is black and I didn't put Alta's red sticker thing on it so it looks stock. Do they hate OCC and oil coolers too?

 

Depends on how much of a pr*ck the inspector wants to be........