[cornerjunkie]

So can you elaborate more on the pricing and exactly what all is done with this tune. I have similar mods to put me into the "300hp club" and have a shark injector tune. If its priced accordingly, I might check it out seeing that Im from Charleston, I would just like a little more concrete info on the tune.

[Cicio@TopSpeed]

Originally Posted by EricSMG

Thanks for the response! But I'm still a little confused.

The factory ECU will increase timing if higher octane fuel is used... you obviously know this. From this, we can conclude that with 91/93 octane in the tank, the ECU is actually retarding the timing to some degree (no pun intended). Or, in other words, the ECU is running the maximum amount of knock-free timing it can get away with based on the fuel.

So with that said, how can you possibly increase the timing target since the ECU already achieves this? (not discounting your results, just wanting to understand)

Again great questions....I will do my best to explain, and gladly get my tuner in here if it goes over my head

The DME in these cars is smart but it is not that smart. It will NOT target a higher timing threshold than is hard programed in the timing tables. It will pull and push timing based on octane you are correct on that, but only to a certain point.

This is much like all of the Porsche DMEs that we tune. Whether naturally aspirated or turbo charged they work the same way.

[Cicio@TopSpeed]

Originally Posted by cornerjunkie

So can you elaborate more on the pricing and exactly what all is done with this tune. I have similar mods to put me into the "300hp club" and have a shark injector tune. If its priced accordingly, I might check it out seeing that Im from Charleston, I would just like a little more concrete info on the tune.

I would love to, but I really don't feel right doing it publicly until I give the board money! Why don't you give me a call at the shop, or PM me. As soon as someone will email me back about vendor ship I will be posting TONS of public info for you guys to go over.

Thanks for the reply.

[EricSMG]

Originally Posted by Cicio@TopSpeed

Again great questions....I will do my best to explain, and gladly get my tuner in here if it goes over my head

The DME in these cars is smart but it is not that smart. It will NOT target a higher timing threshold than is hard programed in the timing tables. It will pull and push timing based on octane you are correct on that, but only to a certain point.

This is much like all of the Porsche DMEs that we tune. Whether naturally aspirated or turbo charged they work the same way.

Yep, makes perfect sense, but only if the dyno graph posted is on race fuel. Otherwise, it just doens't add up (or make sense to me.)

[Cicio@TopSpeed]

Originally Posted by EricSMG

Yep, makes perfect sense, but only if the dyno graph posted is on race fuel. Otherwise, it just doens't add up (or make sense to me.)

This graph was on 93 octane Shell pump gas.

The factory flash is set on "safe mode" as are most canned flashes. They don't know where the car is going to be run, or if your getting your gas at WalMart or the local Shell. They target lower timing and richer AFRs for safety. As do we with canned flash tunes. However if the car is here and we are able to see how it responds to a higher timing and more aggressive cam timing, then we are able to push it closer to the limits to make optimal power. Again just like ANY custom tune on any car there are gains to be had.

[azndrunk74]

my old dinan tune ran pig rich up top too. did he have the 'stage 3' tune? anyways, i hated it when i was N/A...i'm sure the customer is much happier now.

[EricSMG]

Originally Posted by Cicio@TopSpeed

This graph was on 93 octane Shell pump gas.

The factory flash is set on "safe mode" as are most canned flashes. They don't know where the car is going to be run, or if your getting your gas at WalMart or the local Shell. They target lower timing and richer AFRs for safety. As do we with canned flash tunes. However if the car is here and we are able to see how it responds to a higher timing and more aggressive cam timing, then we are able to push it closer to the limits to make optimal power. Again just like ANY custom tune on any car there are gains to be had.

Very good! Thanks for your time.

[Mr.G3]

heh, we are known to be one of the toughest crowds around when it comes to requesting actual proof of gains for our cars...

welcome to the board, hopefully you can soon become a sponsor and then share more info in here...

[razzamagoo]

Let me first start off by stating that Topspeed has been doing ALL of my tunes for 5 years now. I'm new to the Bimmer world but I'm no stranger to Subarus as I am the current record holder of the worlds fastest stock engine 2.0L and 5 speed WRX. The car itself is forever dead (totalled) but the record holds. I know two guys within 2-4 hundreths of a second and they are trying hard to beat the 11.73 @ 122 mph I ran.

Anyways this tune is on 93 octane. Simple tuning will allow the DME to target higher 'percentages' than factory. BMW has our cars dumbed down so that it will not blow up if your wife or girlfriend or whatever accidently puts in 87 octane. There has to be a vastly larger room for error on a stock car.

Now with a custom tune you can pretty much guarantee that only a certain fuel will be used. Therefore you can tighten the tolerances and raise them up some. I have seen SEVERAL BMW's come out of this shop with IMPRESSIVE results. There is surely no foul play here.....the only difference is the custom tune. Car loaded on dyno, baseline pull made (prolly made several baseline pulls for consistency), then then custom DME tuning. No fuel changes, no engine mods, nothing but DME reflashing done.

Doug knows his stuff. He tunes them all. Subarus, Evos, Porsches, R35 GTR's, any BMW, 370's, you name it he can likely tune it.

[talontid]

Originally Posted by EricSMG

Thanks for the response! But I'm still a little confused.

The factory ECU will increase timing if higher octane fuel is used... you obviously know this. From this, we can conclude that with 91/93 octane in the tank, the ECU is actually retarding the timing to some degree (no pun intended). Or, in other words, the ECU is running the maximum amount of knock-free timing it can get away with based on the fuel.

So with that said, how can you possibly increase the timing target since the ECU already achieves this? (not discounting your results, just wanting to understand)

From the factory the ECU is limited to what it can do, (many think it is greaty, but there is always room for improvement). With that said, when you adjust the timing, you are adjusting the base timing, which then the car will have a curve to, and this brings it out of it's "stock" parameters. The factory sets all vehicles regardless of what they are to run ultra rich and safe from the factory. Hell my car has cats and stinks sometimes on startup of raw fuel, I can onyl imagine what the AFRS' look like. There is no doubt to be made by leaning the car out a bit and adding some timing. Apples to oranges but FWIW, my Evo made +60 whp from a reallllly good tuner/dyno. i have been saying it for a while on here, a custom dyno tune will yield much better results than a mail in DME flash, as the flash has to be more generic to cover a broader range of cars vs. individual dyno tuning.