- Fri Sep 09, 2022 12:34 am
#58539
That screw is the return stop. It's only purpose is to keep the primary throttle blade from closing tight and wearing the housing out. there is a procedure for setting the return stop. If you do a search on vwvortex.com you should be able to find a write-up on how to do it. the long and short is that you want the blade to close with no gap and not have any stiction as you begin to open the blade by hand by rotating the throttle linkage.
There should be a 7mm hex head brass screw on the back of the throttle body. If you remove it all the way, it should either be flat (early rabbit) or pointed on the end and have an o-ring on it. that is your idle adjustment screw. it opens and closes an air bypass in the throttle body.
What size (cc/min) are the new injectors you bought?
Duly noted on the TPS. That would explain why the log shows partial throttle. I would suggest working on getting the VE table, timing etc fixed first. The TPS is most likely fine at this point.
something that stands out to me in your tune when I open it (as a temporary project) is that the required fuel dialog shows: displacement 350cc, 4 cyl, 30cc/min if I then press ok it returns 19.6ms for req_fuel (that is drowning in fuel with 245cc injectors). when I put in displacement 1800cc, 4cyl, and 245cc/min it returns 12.3ms after I press ok. you may want to check into that.
I also noticed a fairly large amount of sync loss in your log something in the neighborhood of 57. That is a ton.
I have attached a copy of my current tune, a log of my drive home today (if you are interested) and my current spark table. you can load the spark table by clicking the green down arrow at the top right of the spark table screen in ts and then selecting the table file. I also attached a basic starting point VE table for the 1800.
Keep working at it my friend before you know it you'll be cruising down the road in that thing.
There should be a 7mm hex head brass screw on the back of the throttle body. If you remove it all the way, it should either be flat (early rabbit) or pointed on the end and have an o-ring on it. that is your idle adjustment screw. it opens and closes an air bypass in the throttle body.
What size (cc/min) are the new injectors you bought?
Duly noted on the TPS. That would explain why the log shows partial throttle. I would suggest working on getting the VE table, timing etc fixed first. The TPS is most likely fine at this point.
something that stands out to me in your tune when I open it (as a temporary project) is that the required fuel dialog shows: displacement 350cc, 4 cyl, 30cc/min if I then press ok it returns 19.6ms for req_fuel (that is drowning in fuel with 245cc injectors). when I put in displacement 1800cc, 4cyl, and 245cc/min it returns 12.3ms after I press ok. you may want to check into that.
I also noticed a fairly large amount of sync loss in your log something in the neighborhood of 57. That is a ton.
I have attached a copy of my current tune, a log of my drive home today (if you are interested) and my current spark table. you can load the spark table by clicking the green down arrow at the top right of the spark table screen in ts and then selecting the table file. I also attached a basic starting point VE table for the 1800.
Keep working at it my friend before you know it you'll be cruising down the road in that thing.
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