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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 Turbo upgrade intro price and list for batch 1 pre-orders



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      10-09-2013, 11:22 AM   #199
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JB4 with ISO is what I'm assuming will be doing the tuning work........plus a little meth injection for added safety. Terry BMS mentioned ISO was created to tune larger turbos in the future and smooth out the power band, etc.
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      10-09-2013, 11:34 AM   #200
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Originally Posted by jyamona View Post
How is that diverter valve going to function? I thought the N55 didn't have a good vacuum source due to having no actual throttle body closure or whatever.
There is a lot of speculation going on with the N55 and not a lot of fact, we like to work in facts, when the car gets here we will know a lot more.
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      10-09-2013, 11:44 AM   #201
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There is a lot of speculation going on with the N55 and not a lot of fact, we like to work in facts, when the car gets here we will know a lot more.
Do you think a wastegate dumping into the atmopshere will be possible with this turbo?
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      10-09-2013, 11:47 AM   #202
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Do you think a wastegate dumping into the atmopshere will be possible with this turbo?
? huh, this turbo has an internal Wastegate on it. If you are referring to the BOV, we shall see, we have both types, I have put a recirc one on it for now. I am not 100% sure if the N55 uses a maf sensor at all, if it does, you have to vent before the maf or it throws the readings off. If it is pure speed density just using maf tables for fueling but not an actual maf like the N54 then it shouldn't be a problem
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      10-09-2013, 11:48 AM   #203
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? huh, this turbo has an internal Wastegate on it. If you are referring to the BOV, we shall see, we have both types, I have put a recirc one on it for now. I am not 100% sure if the N55 uses a maf sensor at all, if it does, you have to vent before the maf or it throws the readings off. If it is pure speed density just using maf tables for fueling but not an actual maf like the N54 then it shouldn't be a problem
Yeah I meant the BOV. Thanks for clearing that up Tony
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      10-09-2013, 01:41 PM   #204
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There is a lot of speculation going on with the N55 and not a lot of fact, we like to work in facts, when the car gets here we will know a lot more.
I assume that was their reasoning for using the electronic diverter on the stock turbo. I would hope it's not the case though, especially since the new M3 has the valvetronic as well. Can't wait to see what you come up with

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      10-10-2013, 11:18 AM   #205
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If I could find a reputable shop willing to work with me on this in Los Angeles I would be all over it.
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      10-10-2013, 11:23 AM   #206
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I have a full bolt on 2011 n55 135i DCT in Los Angeles. Maybe my car may work?
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      10-10-2013, 11:36 AM   #207
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I have a full bolt on 2011 n55 135i DCT in Los Angeles. Maybe my car may work?
Could very well work if you are willing to be without your car for 3 weeks or so, while we install, test, and tune. Email me. Tony@vargasturbo.com, we are just up north in the San Fran Bay area.
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      10-10-2013, 01:38 PM   #208
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Umm I wonder how the DCT will hold up with an upgraded turbo.
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      10-10-2013, 01:46 PM   #209
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Could very well work if you are willing to be without your car for 3 weeks or so, while we install, test, and tune. Email me. Tony@vargasturbo.com, we are just up north in the San Fran Bay area.
Ill shoot you guys an email, I am pretty sure my clutch would slip lol
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      10-10-2013, 02:05 PM   #210
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Umm I wonder how the DCT will hold up with an upgraded turbo.
No one knows, that's the beauty of trying new things.
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      10-10-2013, 02:11 PM   #211
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No one knows, that's the beauty of trying new things.
I am very interested in seeing how it'll hold up.
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      10-11-2013, 02:10 PM   #212
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+1 for the DCT. The AT should withstand the poweroutput easily (look at the N54). And the MT is very easy to upgrade. The DCT is the most interesting imho. We have a shop here in Germany which upgrade the DCT for $1.600. It should be able to handle 700-750Nm (engine) then.
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      10-11-2013, 02:34 PM   #213
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Turbos are here and ready to go, just waiting for test car to get here. Worlds first completed N55 turbo upgrade.
i noticed the forge dv's is there anyway these can be purchased seperate?
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      10-11-2013, 02:35 PM   #214
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Originally Posted by Vargasturbotech View Post
Turbos are here and ready to go, just waiting for test car to get here. Worlds first completed N55 turbo upgrade.
i noticed the forge dv's is there anyway these can be purchased seperate?
Not yet, we need to confirm this set up is actually going to work properly then yes once we get it all finalized you will be able to buy them.
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      10-11-2013, 08:03 PM   #215
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The BMS DCT cars are having slippage issues at 400wtq+
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      10-17-2013, 12:39 AM   #216
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Quote:
Originally Posted by Vargasturbotech View Post
? huh, this turbo has an internal Wastegate on it. If you are referring to the BOV, we shall see, we have both types, I have put a recirc one on it for now. I am not 100% sure if the N55 uses a maf sensor at all, if it does, you have to vent before the maf or it throws the readings off. If it is pure speed density just using maf tables for fueling but not an actual maf like the N54 then it shouldn't be a problem
The n55 does indeed use MAF. Im fairly sure it also vents before the MAF... if that helps, but I'm sure its old news.
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      11-01-2013, 08:33 AM   #217
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bumpity bump
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      11-01-2013, 08:36 AM   #218
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bumpity bump
Its in a new thread now dude. Called n55 test car install thread or something
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      11-01-2013, 08:44 AM   #219
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      11-01-2013, 08:50 AM   #220
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Lol
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