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335xiRT1 335xiRT1 is offline
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Default b58 tbi kit installed - 12-05-2017, 11:30 AM

recently got tbi kit from bigboost usa, i installed the kit yesterday, did not come with instructions and came with .022 jet website states .026 jet.
I also got the meth threads drilled out on the spacer, but the kit did not come with plugs(easy buy at home depot)

install straight forward, juan did reach out to me later in the day for pointers on install, he wanted to cut factory vacuum line on top of intake manifold for hobbs switch to tee into, not a fan of that so i decided to use one of the meth threads to get boost pressure from(another easy buy at home depot).

now that the kit is installed ive been trying to get it to run right, thats the problem, the factory ecu seems to be fighting the extra fuel, and figting the d@wnpipe, its tough to control boost, im getting alot of throttle closures, ive posted up my pre tbi logs to show how lean the car was running, and post tbi
any insights would help to get this car tuned riht.
im debating on taking out the d@wnpipe.
Attached Files
File Type: csv stock pre tbi.csv (5.3 KB, 62 views)
File Type: csv map1 pre tbi.csv (4.5 KB, 61 views)
File Type: csv map 6 tbi.csv (4.6 KB, 75 views)
File Type: csv map3tbi.csv (4.6 KB, 51 views)


2017 340i JB4/ BB TBi/ intake
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Default 12-05-2017, 01:33 PM

I would imagine that if BBT developed a kit and also says it will work well with a stock turbo, they would easily be able to help you tune it with the JB4. I doubt anyone will run it without a JB4 (at least not on this forum).

Kit seemed kind of rushed, in my opinion. Sounds good on paper, but I don't think BBT is very detail oriented from what I've seen. At least not enough for me.

Curious to see if you can get it sorted out.


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imjeshy imjeshy is offline
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Default 12-05-2017, 03:06 PM

I was gonna invest in buying this kit but it seems like it was not really thought out well, every time I asked Juan for information about the install and his responses were very vague. No offense to BBT but little testing has seen to be done on this. hopefully someone does get this TBI figured out.


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Default 12-05-2017, 04:16 PM

The Hobbs switch is activated at 15 PSI, if it drops from that pressure and fluctuates the TBI will be turning on and off causing afr and trims fluctuation. You need to get the boost on place. Why don't you try more FUA?


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335xiRT1 335xiRT1 is offline
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Default 12-05-2017, 04:48 PM

I dropped the pressure on the Hobbs switch already.
I will try and raise FUA


2017 340i JB4/ BB TBi/ intake
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Default 12-05-2017, 05:03 PM

Quote:
Originally Posted by 335xiRT1
I dropped the pressure on the Hobbs switch already.
I will try and raise FUA
Try map 7 with 55 boost add as well. Even if you don't have meth.


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Current B58 Horsepower record holder: ̶5̶3̶4̶, ̶5̶6̶3̶, ̶5̶7̶1̶. Currently: 613 WHP


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Default 12-06-2017, 02:14 AM

Keep us updated please. Waiting to install mine, I have to take the car into BMW for these damn coolant warnings.


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Default 12-07-2017, 01:29 PM

lowered pid gain to 6
tried map 7 with 20 additive
logs still dont look good, with the extra fuel the timing seems to be flattening out.
any insight would be great
Attached Files
File Type: csv map720methadd.csv (5.5 KB, 41 views)


2017 340i JB4/ BB TBi/ intake
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Default 12-07-2017, 01:41 PM

Honestly, your pre-TBI logs don't look that greainin regards to throttle, either. This is one reason why I haven't changed to a CLDP yet.

It might be worth a shot to put the stock one back on.


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Default 12-07-2017, 03:02 PM

so bigboost's site says it installs between the CP and TB ... shouldn't it install between the TB and manifold??


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Default 12-08-2017, 03:47 PM

another day more logging, im determined to get this to work

some imrovment on this log, getting there
Attached Files
File Type: csv map6tbiabsolut.csv (3.8 KB, 45 views)


2017 340i JB4/ BB TBi/ intake
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Default 12-08-2017, 05:18 PM

Quote:
Originally Posted by LessIsMore
so bigboost's site says it installs between the CP and TB ... shouldn't it install between the TB and manifold??
Looks just like the BMS meth kit (pre-throttle body):

http://bigboostusa.com/product-category/b58/

http://burgertuning.com/B58_methanol_spacer.html


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2017 F36 440i Gran Coupe | PS2 | MPPSK | Track Handling Package | JB4 | BMS Meth Kit (Dual CM5) | BMS Intake | BMW 513M Wheels | Dinan Shockware

SOLD: 2007 E90 335i | PS2's | JB4 | FBO | 160k+ miles on the car, 120k+ miles on the JB4

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Default 12-10-2017, 10:25 PM

Quote:
Originally Posted by 335xiRT1
lowered pid gain to 6
tried map 7 with 20 additive
logs still dont look good, with the extra fuel the timing seems to be flattening out.
any insight would be great
DME BT is wobbling so something isn't working here... Need to figure out what is causing the wobble. Often it's not enough fuel.
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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Default 12-11-2017, 07:14 AM

Would you mind if I call you at about 4pm so I can give you a few tips?

Name:  tbi 340i ny justin.png
Views: 864
Size:  73.7 KB


Big Boost, designing world's most innovating and efficient turbo kits!
-----------------
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BigBoost's car: BMW M240i
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Current B58 Horsepower record holder: ̶5̶3̶4̶, ̶5̶6̶3̶, ̶5̶7̶1̶. Currently: 613 WHP


Daily Driver: BMW M235i
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Default 12-11-2017, 07:49 AM

The problem with the tbi kit, is it’s pulling fuel from the stock fuel system. At this point, with the IPW cap, I don’t think any fuel coming, in the form of pi or tbi from the stock fuel system, will do much. The only way to properly run it, sadly would need a stand alone fuel enrichment system.
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Default 12-11-2017, 08:10 AM

Quote:
Originally Posted by JB4OFF
The problem with the tbi kit, is itís pulling fuel from the stock fuel system. At this point, with the IPW cap, I donít think any fuel coming, in the form of pi or tbi from the stock fuel system, will do much. The only way to properly run it, sadly would need a stand alone fuel enrichment system.
Actually it does work.

Here you have a pre-tbi:
Name:  Pre TBI Ny 340.png
Views: 841
Size:  62.6 KB

Here is after TBI:
Name:  tbi 340i ny justin.png
Views: 837
Size:  73.7 KB


Big Boost, designing world's most innovating and efficient turbo kits!
-----------------
BigBoost Instagram: @bigboostturbo
webpage: bigboostusa.com

BigBoost's car: BMW M240i
Stage 3.2 turbo
Current B58 Horsepower record holder: ̶5̶3̶4̶, ̶5̶6̶3̶, ̶5̶7̶1̶. Currently: 613 WHP


Daily Driver: BMW M235i
BBT stage 3.3 turbo


Garage Queen: 2014 Nissan GT-R
EcuTek ECM and TCM tune, BDM DumpPipes, BDM intakes, BDM full race exhaust, hybrid turbos, E85. 936 WHP
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335xiRT1 335xiRT1 is offline
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Default 12-11-2017, 08:16 AM

Quote:
Originally Posted by JB4OFF
The problem with the tbi kit, is itís pulling fuel from the stock fuel system. At this point, with the IPW cap, I donít think any fuel coming, in the form of pi or tbi from the stock fuel system, will do much. The only way to properly run it, sadly would need a stand alone fuel enrichment system.
The TBI kit is deff working. Just gotta get it tuned right


2017 340i JB4/ BB TBi/ intake
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Default 12-11-2017, 08:20 AM

Quote:
Originally Posted by Juan_BIGBOOST_TURBO
Would you mind if I call you at about 4pm so I can give you a few tips?

Attachment 69818
4pm is good


2017 340i JB4/ BB TBi/ intake
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Default 12-11-2017, 09:26 AM

Quote:
Originally Posted by Bullitt1841
Hmm, interesting, never realized it was different than the N54/N55 which is post-TB.


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Default 12-11-2017, 09:42 AM

Quote:
Originally Posted by JB4OFF
The problem with the tbi kit, is itís pulling fuel from the stock fuel system. At this point, with the IPW cap, I donít think any fuel coming, in the form of pi or tbi from the stock fuel system, will do much. The only way to properly run it, sadly would need a stand alone fuel enrichment system.
Sorry, don't think that's correct. IPW (injector pulse width) limitations won't keep TBI from working - the TBI totally circumvents the factory DI injectors. Yes it's using stock fuel system in terms of LPFP, lines, etc. - but as long as the LPFP can keep up and is not being limited somehow, the TBI just adds fuel on top of whatever the DME is commanding for DI IPW. TBI would actually be likely to lower the commanded IPW to the OEM DI injectors.


2009 535i Sport - 548whp
Software :
JB4 G5 | MHD | Trebila Tune | XHP Stage 3
Hardware: VTT GC Lites | MFactory Helical LSD | Inlets | Outlet | VRSF 3" D-P's | VRSF 7" FMIC | Fuel-It! S2 LPFP | Fuel-It! TBI | BMS DCI | ER CP | Forge DV's | Koni FSD

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335xiRT1 335xiRT1 is offline
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Default 12-11-2017, 09:51 AM

My trims are actually better after TBI installed and FoL is now at 0, running e20
I might be able to increase the ethanol %, once i get it running 100%


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Default 12-11-2017, 11:43 AM

Quote:
Originally Posted by 335xiRT1
My trims are actually better after TBI installed and FoL is now at 0, running e20
I might be able to increase the ethanol %, once i get it running 100%
Have you been able to reliably tune with TBI and no ethanol? That would be a good starting point.

This B58 engine and DME are completely different and are presenting a lot of problems that were not present in the N54 and N55. Unfortunately, we can't carry over all of our tuning knowledge directly from those platforms. So don't be surprised if we can't figure **** out.


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2017 F36 440i Gran Coupe | PS2 | MPPSK | Track Handling Package | JB4 | BMS Meth Kit (Dual CM5) | BMS Intake | BMW 513M Wheels | Dinan Shockware

SOLD: 2007 E90 335i | PS2's | JB4 | FBO | 160k+ miles on the car, 120k+ miles on the JB4

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Default 12-11-2017, 11:46 AM

Quote:
Originally Posted by LessIsMore
Sorry, don't think that's correct. IPW (injector pulse width) limitations won't keep TBI from working - the TBI totally circumvents the factory DI injectors. Yes it's using stock fuel system in terms of LPFP, lines, etc. - but as long as the LPFP can keep up and is not being limited somehow, the TBI just adds fuel on top of whatever the DME is commanding for DI IPW. TBI would actually be likely to lower the commanded IPW to the OEM DI injectors.
Iíve had this car for 2 years. I know what works and what doesnít. My friend Ryan also had the tbi kit from BB. And he took it off. Aside from that if you wanna keep playing with nitrous solenoids for fuel. Be my guest. Iím not gonna **** talk Bigboost but they rush things with not much thought.
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Default 12-11-2017, 02:22 PM

Quote:
Originally Posted by JB4OFF
Iíve had this car for 2 years. I know what works and what doesnít. My friend Ryan also had the tbi kit from BB. And he took it off. Aside from that if you wanna keep playing with nitrous solenoids for fuel. Be my guest. Iím not gonna **** talk Bigboost but they rush things with not much thought.
What's the issue with having a solenoid as fuel control? The solenoid is made for fuel. Also, what makes you think we rush things without knowledge? We have a car to do all the tests required and if it doesn't work we won't release a product. The results are now facts and show that the product does work. We are not making suppositions.


Big Boost, designing world's most innovating and efficient turbo kits!
-----------------
BigBoost Instagram: @bigboostturbo
webpage: bigboostusa.com

BigBoost's car: BMW M240i
Stage 3.2 turbo
Current B58 Horsepower record holder: ̶5̶3̶4̶, ̶5̶6̶3̶, ̶5̶7̶1̶. Currently: 613 WHP


Daily Driver: BMW M235i
BBT stage 3.3 turbo


Garage Queen: 2014 Nissan GT-R
EcuTek ECM and TCM tune, BDM DumpPipes, BDM intakes, BDM full race exhaust, hybrid turbos, E85. 936 WHP
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Default 12-11-2017, 02:47 PM

Quote:
Originally Posted by Juan_BIGBOOST_TURBO
What's the issue with having a solenoid as fuel control? The solenoid is made for fuel. Also, what makes you think we rush things without knowledge? We have a car to do all the tests required and if it doesn't work we won't release a product. The results are now facts and show that the product does work. We are not making suppositions.
Nitrous fogger my mistake. It has poor atomization property. It shoots fuel out like a squirt gun. Because Ryanís car was a disaster and undrivable with nearly 7lbs of overboosting and two turbo revisionís. He couldnít WOT the car without an issue. Hence why the product hasnt been tested throughly. Even Terry said the turbo is too aggressive for the car. Iím not gonna argue with facts. Thatís why Ryan returned the turbo after 8weeks of a headaches. Not saying you have a bad product but itís rushed imho.
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