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BMW 135/335 go single turbo - amdhunter go insane.

amdhunter

amdhunter

Lifer
So BMW decides to change their twin-turbo engine designs to a single turbo twin-scrolled design, and rumor is that BMW is claiming their ECU has been hardened to prevent tuners from fudging with it.

This kills me. I wanted a 135 for some time now, and was intrigued by the twin-turbo design. One reason is because I cannot stand the turbo lag in my current GLi, and was hoping that the BMWs twin setup would eliminate this. I am not totally convinced, that a single turbo setup would be less laggy than the TT setup. Also, I bet that it will run out of breath at a lower RPM than the last one did.

Also, we all know that the last-gen 135/335 was sorely underrated, with almost all of them dyno'ing around the 315-320HP mark. No one knows what the new engine will put out, and I would hate to buy a 2010 right now.

Ughh...life sucks. I guess it's a good thing I didn't jump into anything too fast.
 
amdhunter said:
So BMW decides to change their twin-turbo engine designs to a single turbo twin-scrolled design, and rumor is that BMW is claiming their ECU has been hardened to prevent tuners from fudging with it.

This kills me. I wanted a 135 for some time now, and was intrigued by the twin-turbo design. One reason is because I cannot stand the turbo lag in my current GLi, and was hoping that the BMWs twin setup would eliminate this. I am not totally convinced, that a single turbo setup would be less laggy than the TT setup. Also, I bet that it will run out of breath at a lower RPM than the last one did.

Also, we all know that the last-gen 135/335 was sorely underrated, with almost all of them dyno'ing around the 315-320HP mark. No one knows what the new engine will put out, and I would hate to buy a 2010 right now.

Ughh...life sucks. I guess it's a good thing I didn't jump into anything too fast.
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I'm pretty sure it will end up less laggy, but it will also run out of breath earlier. In all the articles BMW mentioned that the torque curve peaked earlier and stayed there for a longer total RPM range.

For the tuning alone though, I'm pretty sure if I were looking for a BMW, I'd be picking up a 335i right now though.
 
crazySOB297 said:
I'm pretty sure it will end up less laggy, but it will also run out of breath earlier. In all the articles BMW mentioned that the torque curve peaked earlier and stayed there for a longer total RPM range.

For the tuning alone though, I'm pretty sure if I were looking for a BMW, I'd be picking up a 335i right now though.
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From what I read, it will kick in 100rpm lower, which would be around the 1500rpm mark, which is super nice...but, I think we'll see the overall peak HP go down from what the current "actual" HP.

It might be a 300HP car [for real] now. I've driven an auto 135 and was thoroughly impressed by the acceleration in it. I'd be pissed if I notice a 20HP loss in power.
 
I've been in a 335i pre and post Dinan tuning... and DAMN that is some power. There is a little bit of lag, but on the highway it's not really noticeable. 135i's are known to drop into the 12's on a good tune. Pretty nice!
 
crazySOB297 said:
I've been in a 335i pre and post Dinan tuning... and DAMN that is some power. There is a little bit of lag, but on the highway it's not really noticeable. 135i's are known to drop into the 12's on a good tune. Pretty nice!
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Yeah, this might be a blessing in disguise for me. Maybe there will be some TT 135's hitting the used market soon (already saw one for sale at Bimmerfest for 26K) and I'll outright buy one and mod the hell out of it. First mod will be a ECU tune, and maybe a nice exhaust/intake setup to match.

For less than 2000, you can make a monster car out of it. Too bad the fuel pump issues will always be in the back of your mind. ugh.
 
I was under the impression that it's going to a twinscroll turbo, so kind of like 2 in 1.


Local tuner down here (Topspeed) is working on a 135i. Seems to take well of course to ECU remapping, but it takes a very long time to do this mainly in the file transfers. Apparently it takes about 45 mins just to reflash the ecu.
 
DEMO24 said:
I was under the impression that it's going to a twinscroll turbo, so kind of like 2 in 1.


Local tuner down here (Topspeed) is working on a 135i. Seems to take well of course to ECU remapping, but it takes a very long time to do this mainly in the file transfers. Apparently it takes about 45 mins just to reflash the ecu.
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Twinscroll turbo /= twin turbo.
 
DEMO24 said:
Umm, I'm aware of that. Hench the 'kind of' like 2 turbos.
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I know, it's just that they are no where near enough to be even called "kind of like" in my opinion. Twin turbo's will have similar spooling times with a much higher top end. I actually think this is a cost cutting measure and has nothing to do with real performance.
 
um there is a 335iS now that keeps the twin turbos and its rated >330hp with an overboost function too, dunno about the 1 series
 
crazySOB297 said:
I know, it's just that they are no where near enough to be even called "kind of like" in my opinion. Twin turbo's will have similar spooling times with a much higher top end. I actually think this is a cost cutting measure and has nothing to do with real performance.
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Fair enough. No doubt its cost cutting, though it might give some more oommph down low.
 
crazySOB297 said:
I know, it's just that they are no where near enough to be even called "kind of like" in my opinion. Twin turbo's will have similar spooling times with a much higher top end. I actually think this is a cost cutting measure and has nothing to do with real performance.
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The buzz amongst all the various forums is that BMW did this to meet better emissions ratings when the car is started/at idle. So blame the environmentalists out there for screwing with a good thing.
 
RichieZ said:
um there is a 335iS now that keeps the twin turbos and its rated >330hp with an overboost function too, dunno about the 1 series
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Wow, that sucks. So they are crippling their current series, and I bet it won't drop a dime. If anything, they'll probably raise prices across the board. 🙄
 
Is BMW doing this for both the 1- and 3-series turboed engines? I was under the impression that the 335 is staying at twin while only the 1 is going to a single.
 
GTaudiophile said:
Is BMW doing this for both the 1- and 3-series turboed engines? I was under the impression that the 335 is staying at twin while only the 1 is going to a single.
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Nope, the 335 is being changed as well. I can't wait to see reviews on this. BMW will get murdered by the press if the new engine doesn't exceed the current gen.
 
GTaudiophile said:
If all else fails, you can wait for the turboed-4 in the next-gen 1-series. I bet that will be fun too.
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Turbo 4 engines suck. I hate my 2.0T GLi, and I hate my brothers EvoX. The only 4 banger I do like is the Civic Si, and that is NA. 🙂
EDIT: I hate my brothers EvoX mainly due to the DSG transmission, I might like it more if it were manual.
 
You're going to have hypertension and blow an artery if you don't stop obsessing so much.

You won't notice a difference, especially considering you've not owned a "twin turbo" BMW anyway.

And since you're leasing, modding is just another game of chance you're playing with your cash on a car you don't own.

Why not just buy a used one with all this cash you're blowing?
 
amdhunter said:
The buzz amongst all the various forums is that BMW did this to meet better emissions ratings when the car is started/at idle. So blame the environmentalists out there for screwing with a good thing.
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err, how does the turbo impact emission at idle? Or even at start?
 
sdifox said:
err, how does the turbo impact emission at idle? Or even at start?
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BMW also claims it has reduced cold-start emissions by routing all the exhaust gases through a single, larger catalytic converter that heats up faster. On the intake side, the throttle is eliminated thanks to the addition of BMW's Valvetronic variable valve control system. The N55 also gets direct fuel injection.
 
Jumpem said:
BMW also claims it has reduced cold-start emissions by routing all the exhaust gases through a single, larger catalytic converter that heats up faster. On the intake side, the throttle is eliminated thanks to the addition of BMW's Valvetronic variable valve control system. The N55 also gets direct fuel injection.
Click to expand...

That's fine, but like I said/believe, the turbo has 0 impact on emission on idle or startup. I am just trying to see if I an wrong.
 
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