[AltecBX]

I've been tune-less for the last two weeks as I had to drop my car in for service. I had my brakes pads replace and Progman updated to v38.1. My car came programed with Progman 27, which then I upgraded to 29.2, and now I'm on ISTA/P 2.38.1. While tune-less for two weeks, the car felt amazing on how responsive it will felt at low rpms and low throttle. Now that I got the Procede v4 back on, it feels the same but with much more power, OMG. The car feels so much better, I feel like I bought another car with a tad bit more of power. It feels so responsive.

As soon as I installed the new 7/14 maps with the new boost gauge firmware, I took it out for a spin. My god how I like the immediate response. Once I get it on to boost, this baby moves. Autotune was tunning it from 13.5psi set point to 13.8psi and IC from 50 to 42. It also brought aggression level from 2.0 to 3.2 the whole 20 miles of testing at 80F temp.

I went and filled up the empty tank with $100 of 100 octane from Sunoco(12.5 gallons). I notice that while ignition is in ON, your fuel level gauge works normally. I saw the needle raise till the top while filling up. Once you turn on engine, the Procede IN-Dash Boost gauge takes over, very cool. After 3 wide open throttles, IC started working down to 0 from 42. Aggression level backed down from 13.2 to 2. Boost started creeping up(I was in shock that it worked so perfectly).
Finally boost stood at 15.8 so I decided to raise maximum boost limit from 16 to 17. It then started raising boost and settled at 16.9. I was amazed on how much more aggressive the car wanted to get while aggression level staying at 2.0. My car is completely stock in the hardware dept(expect DCI). I then raised the maximum boost limit to 18psi and boost raised to 17.1 This time IC raised as well from 0 to 1(lol). I then said to myself, 17.1psi with 100 octane in 80F temp, is probably the limit for my setup. I'll probably want to get a better limit limitation from Shiv on this one.

Great job from Shiv and the Vishnu team. I like how they keep the Procede tune relevant and features coming like unlimited pancakes from IHOP. Thanks to BMW for making the new software so much better as well. After reading so much complaint about people getting lag with version 2.32-2.36, these new one doesn't have any of those issues in my experience. Car feels so good now. Driving her to GA tomorrow for a day and back to NY on Tuesday. Wish I could install my meth kit before I go, but have no time. For anyone saying autotuning is a gimmick or useless, think again. It worked so perfectly well to the environment and fuel I fed to it. I recommend you guys and girls get the new software for the car first and then the tune. You'll feel a difference just with latest software update. Second, install the tune which makes it feel that much better with more power, plus nice useful features. I don't know how more power is even feasible in America. Feels so DAMN scary at 17psi.



-Here is a screen shot of boost at 17.1 psi, agression level at 2.2, & IC raised to 1.

[Ilma]

Yeah.....I love the level of boost control you get with the Procede too.

Not only is boost directly controlled - you can set it by fine increments and decide where you want the upper limit to fall.

Total control.

[alextremo]

I wouldn't run through that whole tank of 100 @ 17psi. Probably ok for a couple passes at the strip, but your working the turbos awfully hard with just dci...

[AltecBX]

The only time I saw the in-dash boost gauge at 17psi was at wide open throttle. I never really stay at wot over 10 second at a time. Most wot driving is done in highway anyways.

[rbaldwin28]

Stock intercooler is putting a lot of back pressure on your turbos at 17psi. I do this too with 100 octane but it just doesn't feel safe over 16psi with out bigger downpipes so I put my peak at 16psi and enjoy the lower ignition correction and the added power higher in the rpm range. My car always feels faster and more powerful running 1psi less of boost and my ignition correction under 50 rather than running 1psi more boost and having ignition correction over 50. Just the butt dyno right now but I plan on some real data very soon.

[Tee212]

WOT highway runs puts the most stress on any engine. Ringlands tend to fry in such condition.

[enrita]

you are running way too much boost on your stock car. Get an IC and catless dps or run much less boost.

[AltecBX]

Aggression levels are stain pretty low (1.2-2.2) the whole time. I set the max boost to 17.2. What would you recommend with 100 octane? I'm not doing any other hardware modifications.

[boostd92]

The intercooler isn't killing you as much as the stock downpipes, when running 100 octane.

I garauntee you that the few psi of backpressure from the stock IC is *NOTHING* compared the horrible exhaust manifold backpressure because of the stock dps/cats. I'd be much more concerned with the resultant EGT's than the IAT's climbing a bit. As long as you're on race gas, the IATs won't be too terribly destructive.

EGT's kill turbos. Considering how small the stock turbos are, catless dp's go a long way to prolonging their life. High boost + exhaust backpressure = $2500 repair regardless of the fuel you use.

[AltecBX]

So when installing my meth kit to run methanol, you're suggesting that Is not recommended to run over 16 psi with stock hardware?

[Jeff@TopGearSolutions]

I run 17 PSI but I have meth (and even that has its limited excuses using a stock intercooler and DP, but it does lower EGT and cool IAT).

However, as I said in other threads we cant get pass the reality of our modifications, octane, ETC with this "aggression level" nonsense.

Regardless of what the procede says is "safe", your still running 17 psi on overspun turbo's with no cooling aside from better octane.

Not to pick on you, but everyone needs a lesson in tuning,reliability, and understanding their cars again on this forum (as well as some others related to the n54).


Here is how I see it for 93 octane:

Tune Only 13-14 PSI
Tune DP 14-15
Tune DP Intercooler 16-17

With methanol

15-17 PSI

18 with intercooler at most.


Of course you can run more for an all out drag strip pass or dyno run but on the street daily driving those numbers are what should be followed IN CONJUCTION with logging ignition timing and making sure that is up to par as well.

Some people refuse to log ignition, dont understand its purpose or dont know the benefit, or dont know how, but its a true story teller in how your car is "accepting" the boost pressure as well as the heat.

4000 RPM 10 degrees minimum
5000 RPM 10 degrees (9 at the loswest)
6000 RPM 10+ degrees

[AltecBX]

Thanks JP, when I get a chance I'll do some logs to see if my car can handle 16-17 psi. The car feels great with 100 octane but want to make sure everything is ok.

Are you stock as well and using methanol?

[Jeff@TopGearSolutions]

Originally Posted by AltecBX

Thanks JP, when I get a chance I'll do some logs to see if my car can handle 16-17 psi. The car feels great with 100 octane but want to make sure everything is ok.

Are you stock as well and using methanol?

Tune, DCI, Charge Pipe, BOV, Methaol 80/20 Mix, m10 nozzle, Pump @ 200 PSI

10+ degrees ignition 4000 RPM to redline.

17 Psi Max, Ut65, Ignition Correction 0%

I would get an intercooler, except 1) I dont trust the reliablity of the car and therefore dont want to have to take it off 2) I dont plan on keeping the car as I'm already looking to get out of this car. So i've been done modding for quite some time and rather save the money.

[alextremo]

http://www.e90post.com/forums/showpo...&postcount=223

[Jeff@TopGearSolutions]

^ Conservative and Broad ( no problem with that advice).