[Ryan@Motorwerks]

If you aren't able to gain full control of the AFR targets, could you please just do another dyno? I am just anxious to see what you guys have so far.

[DrRT]

Originally Posted by picus

You know, I might be in the minority (I doubt it though), but I'd rather have you work towards an end result that made for a car with better throttle response, better high end, and maybe only 15-20% more overall power, as long as it's nice and reliable on pump gas. It seems like that's the direction you're headed in.

I am sure there are guys that want 700rwhp on 100 octane, but that's just not my thing. I'll order the ECU flash that gives me a little more torque, less throttle delay, and less drop off at the redline but is perfectly safe.

Just imo, of course.

I am with you right there.

[Refujeet]

Originally Posted by jp335i

I am currently building an alter in my living room in honor of the Vishnu gods.

The brown people are going to love this one....

...me included.

[ImUrGoDaK]

will the MPG be hurt significantly after the mod? do you have an estimate?

[fibercus]

Very impressed - I will be following closely.

Great work!!!!!

[Zshazz]

Sounds pretty good.

Too bad we can't have 3 settings. 1 - Tuning to maximize fuel economy (it'd be good for long travels) ... 2 - normal tuning (every day) ... 3 - Vishnu's awesome tuning (weekend or track-day!)

[BiggieJ]

Originally Posted by ImUrGoDaK

will the MPG be hurt significantly after the mod? do you have an estimate?

but really now, does it matter? no really though it would be nice if there was a "switch" to turn on and off the chip.

[Got-BMW?]

Originally Posted by shiv@vishnu

The stock dyno runs as well as prelim tuning results can be found here:
http://www.e90post.com/forums/showthread.php?t=30027

We've run the turbos as high as 20psi (by accident, of course) in the midrange. By redline, the most boost we've seen so far is 11psi. This is with the stock exhaust. Things may change when we get rid of some exhaust restrictions. The turbos are small, however, so don't expect any Supra-like results without big turbo upgrades ($$ and laggy). We're going to try to extract as much power as possible while still keeping or improving upon drivability. The engine is high-ish compression so I don't foresee running much more than 11-12psi on pump gas. On race gas, we can certainly squeeze things harder but I suspect we'll be limited by max airflow limits with the standard turbos. It'll pick up some sweet torque though.

Cheers,
shiv

So those are the results at 11psi?

I was under the impression that those runs were at 9psi but adding more fuel/tuning over stock. So you are just posting that you have more control over tuning throughout the RPM range and not just peak as initially thought!?!?

[OpenFlash]

Originally Posted by Got-BMW?

So those are the results at 11psi?

I was under the impression that those runs were at 9psi but adding more fuel/tuning over stock. So you are just posting that you have more control over tuning throughout the RPM range and not just peak as initially thought!?!?

I'm not sure I follow you.

-shiv

[thinbev]

Originally Posted by ImUrGoDaK

will the MPG be hurt significantly after the mod? do you have an estimate?

Good question. I plan on getting the 335i and don't really need more then 300HP, but if your chip offers increased fuel efficiency while also increasing the HP, then I would strongly consider it. If it increases the HP and lowers the fuel efficiency then I wouldn't get it. I have a friend who chipped his Audi A4 1.8T. It increased his HP by 60HP and increased his fuel efficiency. Please let us know.

Also, I don't race on public roads and couldn't give a s**t if my car does 0-60 in 5.0 seconds, 4.8, 5.1, 5.5, or 5.234... I just want a good handling, well engineered, smooth, sporty, elegant ride that deosn't have me going to the pump every week and the 335i fits that bill.

Thanks!

[OpenFlash]

All things equal, fuel economy will be improved over stock. That's pretty standard since the whole idea of tuning is to make the engine run more efficiently. Of course, if you are hot footing it around on a race track, and putting down an extra 100bhp, it is going to use more fuel than a less powerful car. But on the highway or during normal daily driving, I'd expect to see a slight, but measurable, improvement.

Cheers,
shiv

[lawdude]

Originally Posted by shiv@vishnu

Of course, if you are hot footing it around on a race track, and putting down an extra 100bhp, it is going to use more fuel than a less powerful car.
Cheers,
shiv

An extra 100bhp! Are you just getting our hopes up or is that what is on the horizon?

[Stealth335i]

Originally Posted by lawdude

An extra 100bhp! Are you just getting our hopes up or is that what is on the horizon?

Hehe, just wait till he is done with the race gas map, then you'll be impressed!!

[Bimming335]

Great work Shiv, can't wait to see the final results of your mod.

[brandfish]

Obviously you cannot say when a product will be available, but what has history shown for an average wait time till the people can get a product. Thanks for all the updates, we all love it!!!!!!!!!!!!!!

[thinbev]

Originally Posted by shiv@vishnu

All things equal, fuel economy will be improved over stock. That's pretty standard since the whole idea of tuning is to make the engine run more efficiently. Of course, if you are hot footing it around on a race track, and putting down an extra 100bhp, it is going to use more fuel than a less powerful car. But on the highway or during normal daily driving, I'd expect to see a slight, but measurable, improvement.

Cheers,
shiv

Very cool! Yeah, obviously if one were to drive with a lead foot, the MPG would be worse. I wonder if the direct injection could be tuned to improve the mileage? It would be great if once your tuning is completed, that you also give us the MPG... Or we can just wait until others buy it and try it.

I don't know if this is possible, but what if you guys developed a chip that is controlled by a switch, that turns off the turbos or lowers the PSI less than stock + stopped 2 (or 3) of the 6 cylinders from working so that when I'm on the highway or a stop light, I'm only using 4 (or 3) cylinders and I can get a ridiculous MPG. Then when I want HP the chip can change back to stock or to the "higher than stock" setting. I don't need all 300 HP when I'm on the highway or when I'm at a red light. Plus, with the growing trend in fuel economy, I always wondered why there aren't tuning companies (like yourselves) that not only develop software to increase HP but also to increase MPG. I think something of that sort would sell well...

Take a look at this link about the 1000HP Cadillac 16 "Active Fuel Management"
http://en.wikipedia.org/wiki/Displacement_on_Demand


:rocks:

[Got-BMW?]

Originally Posted by shiv@vishnu

I'm not sure I follow you.

-shiv

What is this thread talking about?

Did you run more boost and get more power or what?

I guess I don't understand the changes you have made over the initial tuning results from the first thread?

It looks like the same dyno graph to me......

[OpenFlash]

Originally Posted by Got-BMW?

What is this thread talking about?

Did you run more boost and get more power or what?

I guess I don't understand the changes you have made over the initial tuning results from the first thread?

It looks like the same dyno graph to me......

Hi there,
This thread is talking about how we just got full control over boost. And that there is only a little bit of work left before we have control over all the stuff we need in order to properly tune this car. There is no dyno chart update associated with this thread. The dyno graph that I think you are referring to is in the other thread from last week when we did a partial tune. Make sense?
-shiv

[poldim]

Way to man....this is what me and my buddies did whenever we got a new component on our cars while at school. Stayed on it for a few days straight until we couldnt see anymore (probably where you got that 20 psi peak)

[silvrevo]

Hummm,, I wonder if Big Al is going to get into the 335i tunning?

LOL,, just a little humor for you Shiv,, from the evom.net

Good job,, you will have all these guys lining up for your exede.

Cant wait to see the final results.

Right after you get the 335i worked out , you will be playing around with the new evoX!!!!!!! Cant wait for that either.

[adc]

Originally Posted by lux.sh

with a slight more extreme tuning, good bye V8 M3.

That may not be the case. The thing is, M3s get their superb performance by being engineered with balance in mind. It's not just one thing that makes them spark (although if it were to pick just one absolutely outstanding item many pick the engine).

But rather - IMO - it's a combination of potent engine, efficient transmission, gearing and smart LSD, suspension tuning, brakes etc that makes the whole package so appealing.

So while a 400BHP 335 will probably keep up with the upcoming V8 M3 in a straight line, it will very likely be left behind in the twisty stuff or on the track. You can of course vastly improve the 335 in all the other areas and surpass the stock M3, but it will cost some $$$ to do it.

My 2 biggest reservations about the 335 are weight and the lack of a limited slip diff. I test drove one in the rain and things were very very lively, to say the least. I cannot imagine what 400HP will do to that car with the stock suspension and open diff.


Lest you think this is some sort of harsh critique of the 335, it is not. The E9x M3 will be priced so completely out of my range, that my only realistic alternative for a high performance BMW remains the 335. So I'm just as excited as the next guy about this car and it's potential, but I'm also aware of some of the holes where money will continue to vanish long after I purchase the car and chip it...

adc
03 330 ZHP

[TheAcAvenger]

Personally, i'm one of those guys who'd like to put the money into an aftermarket suspension, tires, slip, BBK, and such to make it supreme. Its more of a personal feeling. I never really got into the whole, "One day i'll have an M," not to say that they arent some of the best cars out there, it just wasnt something I long for as much as a really amazing vehichle that I can develope over time