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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 05-31-2012, 08:23 PM   #1
Grande D
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Thumbs Up New M54B30 330i Big Bore Throttle Body Option: Need Three Interested Parties!

I approached German Auto Solutions about making a big bore throttle body for our cars, and they are interested! German Auto Solutions makes the phenomenal DISA repair kit that I, aggie and others have installed.

So here's the scoop:

Our stock throttle body has an internal diameter of 68mm and an outer diameter of 73.5mm. German Auto Solutions proposes a 72.5mm bore- as the best compromise between a safe wall thickness and a good flow increase.

This is a 14% area increase over stock.

Production prices are not yet figured out but they should be south of $400. German Auto Solutions would like three interested parties to mail in a $100 deposit to fund the tooling cost, at which point they would machine the throttle plates and develop a prototype. The first (beta) batch should cost around $300 each- although that could change.

If anything goes wrong these initial deposits will be refunded. They clearly stated they will not do core exchanges, and would like to service existing, working throttle bodies. Turnaround time should be around 48 hours in their shop.

If interested please post here, I think for now three will be the limit although I need to check to be sure.

1. zhp43867
2.
3.

Gary at German Auto Solutions told me this about why they do not want to do core exchanges:

Quote:
Thanks,

Please explain in the post the reason for not wanting to do core exchanges. If you sent in a very low mileage throttle body as a core, and received back a bored, very high mileage throttle body, which failed 3 months later due to a bad internal TPS or servo motor, you would be very upset and probably not very happy with German Auto Solutions. Since the TPS and servo motor (which cannot be purchased separately) stay with the throttle body core, I don't see any other way to prevent the previous explained scenario from happening. More than anything else I am trying to create a 100% confidence, and customer satisfaction level with our customers. If someone had a problem with a purchased (core exchanged) throttle body due to failed internal electrical parts which I cannot warranty, that would reflect poorly on our reputation. What I can offer, if there is enough market for these, are bored brand new throttle bodies for less than what Dinan sells them for. I could also look into making brand new 75mm billet throttle bodies which will accept the servo motor and TPS from an existing OEM unit. Those would probably run in the $500.00 range and you would have to send in your stock unit for us to swap the internal electronics.
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Old 05-31-2012, 08:55 PM   #2
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If I can get a core refund from mine of say $100, I would do it and drop the deposit. So basically I'd be out $200 I think that sounds fair, we both benefit!

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Old 05-31-2012, 09:00 PM   #3
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If I can get a core refund from mine of say $100, I would do it and drop the deposit. So basically I'd be out $200 I think that sounds fair, we both benefit!

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What? They do not want to do any cores. It would be a $100 deposit towards a total cost of around $300 for the first batch. They already have M54B30 throttle bodies for doing the production but want to make sure there is substantial interest, and get the deposits for the development cost.
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Old 05-31-2012, 09:56 PM   #4
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To be honest. Me and Brady have the MaxBore. I honestly feel its not worth it...
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Old 05-31-2012, 10:19 PM   #5
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Yeah I contacted him about a similar product for M52tu engines that have swapped the B30 Manifold. He makes the cable driven throttle body in M54 bore and fitment, but the DSC and the Cruise control would be hard to integrate. Unfortunately, the head is restrictive and unless you've got it ported and polished, the bigger TB really won't do much.
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Old 06-01-2012, 02:45 AM   #6
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I would be, but I'm focusing on Suspenion this year. Plus Brady only showed a 1rwhp increase, which could be due to any number of factors.
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Old 06-01-2012, 07:10 AM   #7
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Grrr, dont make me pay the three deposits myself! I will do a before and after dyno- same dyno- no other modifications- same wheels- same gasoline- everything (with 1 week in between for adaptations) if we can get this off the ground.

How much is the Maxbore throttle body bored out? Dinan's throttle body seems to provide real results, so maybe Maxbore did not do a good job?
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Old 06-01-2012, 08:50 AM   #8
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Maxbore was as big as, if not bigger than Dinan. I measured it at some point.

Maxbore did a fine job.

I really think the reason my dyno didn't show any gains was because of my intake. I think that's one reason that I had such nice gains when I installed the long tube.

I've always justified it by realizing that Dinan wouldn't make the part if it didn't have some merits.

I'm sure GAS will make a FINE solution for Fanatics.

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Grrr, dont make me pay the three deposits myself! I will do a before and after dyno- same dyno- no other modifications- same wheels- same gasoline- everything (with 1 week in between for adaptations) if we can get this off the ground.

How much is the Maxbore throttle body bored out? Dinan's throttle body seems to provide real results, so maybe Maxbore did not do a good job?
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Old 06-02-2012, 10:34 PM   #9
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Bump!
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Old 06-04-2012, 07:59 AM   #10
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Interested. Put me on the list. Will this require any tuning to see benefits?
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Old 08-06-2012, 02:52 AM   #11
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I am in. PM me with details. Does that make 3 of us?
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Old 08-06-2012, 02:12 PM   #12
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Interested. Put me on the list. Will this require any tuning to see benefits?
I second all of this
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Old 08-07-2012, 02:55 PM   #13
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I think this can help if you have FI and/or ported heads. Otherwise, I don't see the value.
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Old 08-07-2012, 04:09 PM   #14
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What in the.... I don't even.....


This thread is alive?!?!?!
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Old 08-07-2012, 04:29 PM   #15
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What in the.... I don't even.....


This thread is alive?!?!?!
YUS! and you can put me on the list
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Old 08-09-2012, 01:19 AM   #16
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What in the.... I don't even.....


This thread is alive?!?!?!
So, is this still a possibility?
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Old 08-09-2012, 12:52 PM   #17
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I would guess the answer is yes- I guess I'll contact him. I kinda put the money elsewhere but I can probably get it together. I'll contact him soon.
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Old 08-09-2012, 03:17 PM   #18
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I would guess the answer is yes- I guess I'll contact him. I kinda put the money elsewhere but I can probably get it together. I'll contact him soon.
If all you need is the initial $100 to get things going, I can loan you that for 30 days through PayPal. I am trusting that I will get it back.
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