I got a tb from minimanadam and I’m having Adrian tune mine. But I’m having issues where it’s leaning out around 3-3500k while cruising. It’s like I hit a damn wall out of nowhere. Granted on WOT it pulls great and fast. It’s only giving me issues in low revs and cruising. You have any similar symptoms ?

 

Does it trigger traction control light? One of my 3 cars started acting up, strange fault in abs unit, canbus error, low voltage error and it triggers a lean condition that is cleared by turning car off and back in, aka bump starting

I thought it was my crap battery, I replaced it and can't get there error to come back

 

I have tracking erros on the cheap amazon unit. The sub and main sensors dont track within 2% of each other which will throw a 76 error on a link and likely throw a stock ecu into limp for sure. No issues with real VDO ones but even the amazon are bootleg fakes that say vdo. Bottom line though its likely a fake if you bought it new says vdo and was under 300 bucks. If you start having DBW codes its likely the internal Sub and Main not tracking within spec. Even with sperate voltages inpouted on the link they still drift at a few days and get further apart. I am sure this wreaks havoc on the stock ecu if it comes up.

 

I have not had that problem, the only one that is giving me fits is a used vdo off a bmw.

 

the PID and derivative Gain is flakey on the cheapie ones for sure the window can be all over the place. Might not be a issue on the dme as its resolution window is prob not as wide as it is on a standalone. Quality VDO unit resolved the issue and tracks perfect. Just more chances for learning as you can watch the offset between the internal TPS and the APS. Unless you know it has two internal sensors you have no need to know if that makes sense. DBW is awesome until it isn't lol. Good talk between Daniel myself and others here.

https://forums.linkecu.com/topic/987.../?_fromLogin=1

 

Can anyone confirm size of that evap line/nipple? I thought I had taken a picture with a caliper on but can't find it... Tia.

 

about 8mm OD the straight part

 

Wonderful. Thank you!

 

so would you suggest when purchasing the bmw v12 throttlebodies to stick with either oem used or oem new ? I too found after numerous tests that the throttlebodies power delivery was kinda hit and miss but now I belive the hits were the oem ones I'd used and the misses were the new non oem ones.. maybe come spring I will try this modification again but with an oem again..
I ran one and had great results but sold it to afford something else and when I put on another one my car just never felt rite and I went back to stock ported again BUT I belive my issue was the 2nd throttlebody I tried was not an oem bmw one so it caused that slight error in throttle response or blade positioning and just never made as much power as the oem did the first time id had it installed.

 

I'm starting to get interested in data logging. Can you share your set up? If I'm understanding, AFR serial to usb AND use kcan logger specific to r53 written by Filipe frango?
What sensors are we monitoring? AFR, SFT,LFT, O2 sensors,boost? Duration parameters?

Thank you!

 

I use both, no difference in my datalogs

 

I use aem wideband into filipe's logger. Afr, rpm, ignition are what I use it's easy to extrapolate where to adjust with that. SFT is disabled at high load on these narrow band cars. LFT will apply but I rarely ever let my tunes have LFT

 

that's good to know atleast..I worried about that.

 

Found a cheap genuine (used) one on ebay - so I have to try it

Will be fitted together with:

17% reduced pulley
Newman cam
2.5" stainless exhaust on std. manifold (already fitted)
62mm Intercooler
Colder sparkplugs
Better flowing filter with better cold air feed (Probably a hobo conversion)
Remap

It will be interesting to see how it behaves with it. I do not expect any more power, but I do expect different speeder response as less angle means more opening. (Well i could do this in the remapping as well - but there is a possibility of more flow at full throttle as well)

 

For all who messaged me again about the throttlebody packages I was selling... I will have 3x soon
drilled and tapped throttlebody for thr vacuum line , full custom made 3in intake and k&n filter...
Pm me you'd like and you can put in for yours ahead of time and I will contact you soon as they arrive if your still interested...250$ for a set ( throttlebody, intake and filter setup )

 

Sort of what I've been toying with aside from the cam & intercooler. I think you'll be surprised. Have you considered adding larger fuel injectors?

 

Yes, looking at 400cc/min injectors - as they are cheaper than then 380cc/min. But I'm also looking at a 4bar fuel pressure regulator as a possible alternative to new injectors.

 

I now SWEAR by this modification. I'd said awhile back when I 1st tried it and was 1st selling them. I felt that my car lost some low end and wgat little it gained upto didn't justify the mod.
well , problem was befor MY CAR COULDNT make this much power. It hit a plateau because of my old failing fuelpump that finally got replaced.
Well now , it's faster ALL AROUND and it pulls fricken HARD upto from 5000-7800rpm..
I didn't see that my car was making any extra boost like others have but I definitely have gains all throughout the rpm range.
the ONLY negative is im sure my cone filter and 6in velocity stack and contributing to it but at partial throttle i can hear my intake kinda whistle almost like a turbo but soon as it makes even 1psi it stops and i hear the sprintex begin to scream.
I DID have to take my aftermarket intake and heat it up alot and spray lube on a traffic cone and force the intake on over the traffic cone so that it stretched it enough to fit and even then it took multiple attempts and reheatings...haha I shoulda just waited for my custom intakes to get here but I was wanting to take advantage of the nice weather we are having this week..
looks like ille be ditching my ported stock tbody and matching intake inflatoinfavor of a 3in setup now too...

 

finally was able to do this , ebay throttle body , evap line purged to air ( getting EML light with code 5272) but other wise car runs fine.
Test: warm up, 3rd gear to 7k rpm , release, 4th gear to 3 to 4k , 6th gear to 2k.
result : 17.1 psi at 6944 rpm, afr 11.6
the speed is in Km, need to change it to mph , cant find it in the software settings yet .. lol

https://datazap.me/u/isk/upgraded-th...-7-10-22-16-17

stock throttle body: no error code
result : 16.6 psi, 7107 rpm, 10.5 afr

https://datazap.me/u/isk/wot-test?lo...-7-10-22-16-17

 

What other mods do you have? Over 16 psi sounds like a lot of boost...

Also that fault code seems weird for this mod. Doesn't seem related to the evap system (which should not trigger a fault if just purged to atmosphere).

 

won't help , bumping the pressure on an already maxed out injector wont help..
our cars even with a 17% pulley and nothing else and 380cc , they're being maxed out and run at over 90% duty cycle and have been shown numerous times over that minimum should be 440s for bolt ons and 550s for bvh build and 1000cc for running e85 ( larger fuel pump too then also )
if I were you I'd atleast go 440 and leave some ceiling fir them. Then too if you get more mods down the road you already have adequate fueling..
and also , i only person id have tune any of my or my buddies cars is adriancl . If youd like to discuss tuning and tuning options , pm him. No one more informative, more polite or better at tuning . He's the mini tuning master imo..

 

Not a whole lot of mods really, just 15% pulley, ATI 2% damper, 380 cc injectors, eBay intercooler and tune by Adrian. I also modified the air box like a JCW mod , there is a tutorial here somewhere.

First error was the reed valve , deleted that it went away. 5272 error can be deleted but it went back. It is the same scenario with Mrblah ( downstream supercharger air leak) post #21 above. Might re check all connections again, or drill body or ask Adrian to permanently delete code .

Equipment: Frango r53 data logger , AEM boost and AFR gauges.

 

A slight warning when trying to buy the enlarged intake pipe on Aliexpress. I bought from a seller called "K8 Store". The provided a track&trace number, and withdrew the money, but shortly after the cancelled the order - but they kept the money. :/

 

I had the evap line plugged up at first and was getting EML error, was advised by @JKo that that might not be smart and now have purged to atmos and am still getting EML light error however, no 5272 code as of last scan. I don't have all your fancy instruments and didn't modify the airbox but, as far as I can tell the car runs fine.

Adrian didn't seem too convinced by this mod but I'm going to continue to play with it. Will swap back to stock to see if that cures EML error before drilling and tapping larger TB.

 

So no error code for you even with EML light on ? Am I understanding it correctly? With the modified air box and upgraded air filter, hose .... The supercharger whines like a screaming banshee during wide open throttle. The numbers don't lie , just pulls hard. I don't track and this is just a weekend car. If I could just take that error code out , that would be grand. I know , first world problems.lol