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having hard time to get the picture from the CNC shop, because in paralel other NDA projects running. But , here you have some of the pictures with the the cleaned parts , and one picture from the CNC review. Important info about the geometry of this casting after measurements ! !!!! - one hole (out of 5) of the plastic cover , is the single one which will hardly fit . This is aestetics, not functional issue but you will be contacted individually by customer support(the ones with active orders) to discuss options, including having the fixed version.
The reason is different wax ports, add different shrinkage areas.
The good side of the report is the precision areas, including the 4 bolts holding the piece on the manifold, are not influencing or bringing any the geometry issues.
the not machined part pictures you had 2w ago in your inbox email, (video with full final machining still pending) .
There was only one part machined by now, due to measurements report.
The first picture is from the process of milling, (chamfers are not done to it, nor the side holes of the sensor)
Updates will follow
Last edited by cristian.s; 11-29-2019 at 09:39 AM.
I’ve been following this thread with great interest, the part you are manufacturing is the X100 one that should also fit early STR’s right? If so where do I sign up for one
I’ve been following this thread with great interest, the part you are manufacturing is the X100 one that should also fit early STR’s right? If so where do I sign up for one
Question for knowledgeable people. Will you tune your car after TB install?
I have my car almost done and would like to get it tuned and drive. Since TB is 6 months late and who knows how much longer is it going to take, cant decide what to do. Don't want to tune it twice, don't want to drive it now without tune as well.
On one hand, MAF should be able to meter air and adjust AFR accordingly, but on the other hand I have read that ECU still expects certain amount of air from a certain % of TB opened and since this TB is way bigger than OEM, hard to say how MAF/ECU would handle it.
What I am trying to say, that the car will probably run fine in closed loop situation. But how will it impact open loop? I am not that familiar with ECU tuning, so it is kind of confusing for me. How I see it, bigger TB will mess up the tune and it need to be retuned, but yeah, I would like people who are familiar with it provide some insight
Last edited by Paul Eseck; 12-07-2019 at 12:22 AM.
One picture with the so waited 83mm TB
And also with the missing piece - the top hole misalignment . Is hard to get clearance, but the fact the plastic cover has reinforced metal rings on these holes, makes no workaround except some bit more tweeks to the casting process.
More fancy pics tomorrow with the milled surfaces
What I am trying to say, that the car will probably run fine in closed loop situation. But how will it impact open loop? I am not that familiar with ECU tuning, so it is kind of confusing for me. How I see it, bigger TB will mess up the tune and it need to be retuned, but yeah, I would like people who are familiar with it provide some insight
Hi Paul -
I can answer to your question, but it will very good to get a second complete answer from another user - avoiding in this way conflict of interests
The closed and open loop are coming from software nomenclature mostly, meaning :
Closed loop - ECU gets feedback from sensors or other ECUs
Open loop - ECU runs on a predefined map and settings from it's memory (EEPROM) . Sometimes called limp mode
So if some tuner say to you , will make your ECU run in Closed loop , you can further understand, that is not saying much to you. The problems that most of the software engine tuners on the OEM ECU have, is that they can't decrypt the key , which was used to encrypt the MAP software.
Therefore without that key, the ECU still can be re-written with a changed fuel map, but the OPEN Loop security map can't be let active. So they disable it. If they don't , you will have it still, but also you will get the MIL on, and on the diag report will get error : "REPLACE ECU"
Why is that map important? Is because when your sensors for fuel mixture are down- for any understandable reason - for example O2 sensors they expect to fail over 100k km , your ECU will have no fallback OPEN loop map to run into , so if you have not sharp sense about the health of your engine , and you most of the times run with your foot on the floor,then you probably after O2, clog the MAP (or MAF depends of engine version) and then engine will perform very bad. So depending on further sensor failures , can do even much more harm to it.
Now , going back to tuning vs TB:
In a closed loop feedback, your ECU will read the TPS values, The air flow temperature and pressure, and the O2 ratios in the exhaust . Having an wide band O2 , will help you to get the best tuning for your setup.
If you will change your TB, more air flow you will have, will be calculated by the Engine- the situation will be very similar with running on cold sunny weather versus very hot summer weather , when O2 values are low / cubicmeter
So new 83 TB will be well understood by the engine ECU.
The very fine tuning values, related to torque and power plots on the dyno, will not be able to be done on your new TB, especially in certain condition:
- Max full throttle to engine breaking (fully closed)
- perfect balance of back-pressure Idle speed engine to full open throttle - take off response -also related to exhaust setup
- smooth correction of torque and power step down or step up on mid-range RPM
Usually these last fine tuning, are done on multiple dyno test and map adjust, directly on your car, and are absolutely done by experienced tuners, are nothing like the online services like you send the ECU to us, and we give it back tuned.
I hope I covered most of your questions and doubts
Last edited by cristian.s; 12-09-2019 at 11:45 AM.
Hi Luca,
I thought you would want to help by posting with the update we had chatted last week. OK, so one item (out of 15)which was fully functional , but plastic dust cover only possible to be installed with 3mm rivets instead of 4mm,
I kept 1 for Luca, to send it to him for free (only the aluminium housing was free of cost, the rest as normal, since the valves and shafts are the same as ll the rest) , being a fully functional prototype,but he declined it , he said he will wait for the perfect one.
Having his feedback, including that part has been discarded with the rest and melted down at the end of 2019 since there is not allowed to spread prototype as final item in active orders.
The new wax parts has been made, and 1 already sent to CNC, another 4pcs just poured , 10 to go from the the new waxes.
Hi Luca,
I thought you would want to help by posting with the update we had chatted last week. OK, so one item (out of 15)which was fully functional , but plastic dust cover only possible to be installed with 3mm rivets instead of 4mm,
I kept 1 for Luca, to send it to him for free (only the aluminium housing was free of cost, the rest as normal, since the valves and shafts are the same as ll the rest) , being a fully functional prototype,but he declined it , he said he will wait for the perfect one.
Having his feedback, including that part has been discarded with the rest and melted down at the end of 2019 since there is not allowed to spread prototype as final item in active orders.
The new wax parts has been made, and 1 already sent to CNC, another 4pcs just poured , 10 to go from the the new waxes.
being I who pay the TB, I decided to take the perfect one and not the one with the holes not aligned. I think I can decide, don't I?
Gents,
I have been reading/ catching up on this thread today with great interest. Can anyone tell me if this 83mm TB (next order grouping) will work on a bone stock ‘05 x100 ?..without conflict or issue..?
my train of thought is for it to be my first step of several upgrades in mind.
Gents,
I have been reading/ catching up on this thread today with great interest. Can anyone tell me if this 83mm TB (next order grouping) will work on a bone stock ‘05 x100 ?..without conflict or issue..?
my train of thought is for it to be my first step of several upgrades in mind.
thank you to any with thoughts to share,
max
enlargement of the intake manifold is almost certainly necessary.
11-11-2019, 09:11 AM
