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      06-15-2019, 06:31 PM   #265
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Quote:
Originally Posted by Bmw doubles View Post
I guess the the idea for lpfp is too increase volume when using e85 and cram more into the hpfp. I think you're right in that cramming more 91-93 oct is not necessary for a stock hpfp. I believe that a lpfp upgrade is primarily for the purpose of an e85 application.

So,if an hpfp upgrade is installed, and you damn well if someone can run e85 they will, the lpfp immediately then becomes the bottleneck. So I'm saying I think they go together.
If you are going the route of a e85 mix then yes both the HPFP and LPFP are a necessary upgrade. But if you are going straight pump gas then no, only a HPFP will do the trick. Obviously once you start upgrading your fueling system it would only make sense to upgrade the LPFP since the cost is so much lower compared to the current price of a HPFP.

I have access to e85 but have no desire to run a e85 mix, mostly due to the tedious process of having to test ethanol content on a monthly basis. So for me running a straight 93 octane tune with a upgraded HPFP is highly desirable and if my LPFP needs replacing in the future I will do so.
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      06-15-2019, 07:07 PM   #266
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you can get away with smaller percentage mixes of e85 without upgrading the LPFP.
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      06-15-2019, 07:58 PM   #267
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Quote:
Originally Posted by Marlinman View Post
you can get away with smaller percentage mixes of e85 without upgrading the LPFP.
Every time I do my pump crashes at wot when getting into the 3 digits.
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      06-15-2019, 09:16 PM   #268
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Quote:
Originally Posted by Bmw doubles View Post
Every time I do my pump crashes at wot when getting into the 3 digits.
**throws money into pit** LOL I hear ya

what tune are you running?
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      06-16-2019, 12:28 AM   #269
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Quote:
Originally Posted by Marlinman View Post
Quote:
Originally Posted by Bmw doubles View Post
Every time I do my pump crashes at wot when getting into the 3 digits.
**throws money into pit** LOL I hear ya

what tune are you running?
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      06-24-2019, 11:06 AM   #270
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Quote:
Originally Posted by JaredG_F30 View Post
Where are you guys buying these b58 HPFPs from? I can't find anything under $800.
I saw this one now

https://www.ebay.com/itm/15354119259...84.m1555.l2649
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      06-24-2019, 11:16 AM   #271
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Iím just to waiting for vis or twisted tuning to release theirs. The B58 is just a slight improvement.
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      06-25-2019, 03:07 AM   #272
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Quote:
Originally Posted by 52172 View Post
Iím just to waiting for vis or twisted tuning to release theirs. The B58 is just a slight improvement.
End of the year unfortunately
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      06-26-2019, 10:00 PM   #273
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Where's the dude whose supposedly maxing out a B58 pump on the ewg n55?
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      06-26-2019, 10:22 PM   #274
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contact mr jozo crepulja ( avatar with red shirt and white dog ) on fb , he or his friend maxed out the stock turbo on an m2 with n55 engine and emix fuel running a b58 pump
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      06-26-2019, 10:48 PM   #275
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✅ thanks message sent.
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      06-27-2019, 08:47 AM   #276
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Spool performance have written back to me regarding the hpfp. They rekn they are 3 weeks away from release with a price tag of 1500 roughly.
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      06-27-2019, 09:14 AM   #277
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Nice a third company developing one! Sounds like the first to bring it to market. 1500 is better than 2k. Iím very interested. Do they have a link to it?
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      06-27-2019, 08:03 PM   #278
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Nah this info was just chatting with them via there fb page.

It's great for another pump to enter the market however at only slightly less in price I wonder do you still go the xdi pump. It's proven to be a very good solution
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      07-18-2019, 09:10 AM   #279
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Should be getting close to releasing it. Anyone else max out the b58 pump on the n55?
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      08-14-2019, 09:11 AM   #280
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has anyone used this part before ? : bmw 13518631642
it the latest revision of bosch pump being used in latest bmw models ( new Z4 and supra aswell ) on all gasoline engines . it should have at least 15 percent extra
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      08-14-2019, 09:41 AM   #281
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Quote:
Originally Posted by T_H_O_M_A_S View Post
has anyone used this part before ? : bmw 13518631642
it the latest revision of bosch pump being used in latest bmw models ( new Z4 and supra aswell ) on all gasoline engines . it should have at least 15 percent extra
No, but I hear it's quite a bit better than the last b58 pump. I think it's the b58m?
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      08-14-2019, 09:44 AM   #282
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Quote:
Originally Posted by T_H_O_M_A_S View Post
has anyone used this part before ? : bmw 13518631642
it the latest revision of bosch pump being used in latest bmw models ( new Z4 and supra aswell ) on all gasoline engines . it should have at least 15 percent extra
Couldn't find more than this informations attached.
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      08-14-2019, 09:58 AM   #283
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It seems to be the same mounting plate than the B58 pump, so will need to be drilled too.
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      08-14-2019, 01:38 PM   #284
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I wonder how it compares to xdi? Looks like it can be bought new for $1,055 (cheapest I found). Even if its not as good as the xdi, its less than half the price. If it allows the n55 to operate better, this would be interesting.
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      08-14-2019, 04:13 PM   #285
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This is exciting, i am going to order my ps2 this week, so I planned on doing it two stages... turbo, then later hpfp... would love to do it all at once and be done with my build, besides brakes and coilovers.

Options coming soon I hope... or someone tries the part thomas is referring to above ...
just cant see paying 2200 for xdi pump
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      08-14-2019, 05:42 PM   #286
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the only snag other than modifying the flange would be the connector ,
since its rotated like 135į CW compared to the older one , the connector might collide with the intake manifold
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