When i was doing alot of reading for my car I came across something online that may help your tuning. I think your MS has a map sensor built into the box correct? So this means that you have to run a vacuum line from the engine to the MS ecu? People were saying regarding tuning like that witht he supras that it is better if you either plum a hard line for most of the run from the intake to the ecu or have the map sensor as close to the intake as possible. Can you run an external map sensor and input it into MS to work the same as the internal one?
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94 Supra TT Auto, Project 9.xx in the works
97 Spyder AWD 6 bolt 2.3, 579hp 496tq **FOR SALE**
Not sure. But I have no desire to run an external MAP sensor to be honest. It means I have to drill/tap a sensor into the intake, then run all the wires for that. I personally love the idea that I do not have to do that, and simply just need to run a vacuum line to the box.
FYI my setup actually has 2 MAP sensors, 1 which is hooked to the intake via a vacuum line, and the other just open to the atmosphere, that way it can correct for barometric differences, which is pretty sweet I think.
To start from the beginning, I dyno'd a week ago. Got all the cruising type tuning done, car is running and starting great. But couldn't do any WOT tuning because of what turned out to be a bad coil. With the coil replaced, I returned to the dyno yesterday for the WOT tuning.
You'll see the first run was at about 339hp. Shane did his thing, 2nd run we were already up nearly 50hp. A handful of more pulls and we stopped it at 406hp which far exceeded my expectations (I was thinking more like 360). This is on straight WG boost, no boost controller. You can see how soft boost comes on with this WG. I thought it was a 1bar spring but maybe it's more like a 10lb. Will have to look into swapping that out this winter.
I can't thank Shane enough, I'm very happy with the entire experience (as always). One thing you'll notice is a random blip in the curve at around 3500rpm. It would occasionally miss at that spot very slightly. Not exactly sure why but not that worried about it either.
So I've attached the 3 charts (HP vs. Boost vs. TQ vs. AFR). Creeps up to about 12psi at the end.
Also attached is a little video. Thanks to Kerry for taking some good footage at the dyno, enjoy!!
Check your logs for a trigger wheel sync error at 3500RPM.... might be causing the miss.
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"The moment money becomes your motivation, you're immediately not as good as someone who is stimulated by passion and internal will"
-Sebastian Vettel
Thanks all. There is no sync error at that point, one of the first things we looked at. I was talking with my Megasquirt buddy down in FL, he tuned an SC300 yesterday with the exact same symptom. He said he messed with timing and was eventually able to get it to go away.
Ok, good... those errors can be pesky. I've been fighting sync issues with a 4age all last week (ms2) *pulling hair out*
Look forward to seeing her!
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"The moment money becomes your motivation, you're immediately not as good as someone who is stimulated by passion and internal will"
-Sebastian Vettel
lol, if you read back like 15 pages, you'll see my sync error nightmare I went through as well Finally got it 99.9% gone using the filtering in TunerStudio.
Looks awesome man!
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