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Stock 96 new MSPNP2 install - lean stumble
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Total newb here. I followed the MegaSquirt PNP Gen2 Documentation and installed the MS9697PNP2 into my stock 96 miata. The car ran great on the OEM ECU with 14 degree timing bump. I read the Tuner Studio MS New User Guide, MegaSquirt PNP Gen2 Manual and searched for similar forum posts.
My issue is that the car leans out and stumbles off idle. I can feather it, but if I blip the throttle from idle it falls on it's face. Runs and pulls pretty well throughout the rest of the rev range. Base map for 94-97 1.8 from Megasquirt's website Base timing has been set and verified per the installation document MTX-L grounded at the post by the throttle body and calibrated as: Point1: 1.0 9.7 Point2: 3.68 18.2 Reads within 0.2 of what TunerStudio sees TPS has been calibrated Barometric Correction total vacuum(%) and rate(%) set to 0. Barometric correction curve is set to 100% Required Fuel is set as: 1800cc engine size 265cc injector size Still using the MAF Thermistor Measurements are: 2490 Ohms -4 16150 104 1150 176 330 Here are my tables: https://www.miataturbo.net/attachmen...ine=1460732520 https://www.miataturbo.net/attachmen...ine=1460732520 https://www.miataturbo.net/attachmen...ine=1460732520 A tune and short log of it idling and revving attached. I drove around with AutoTune on and it did modify over a 100 cells. Do I just need to make the cells where it stumbles richer? That makes the fuel table really odd looking. Is it a setting that I'm missing? Any help would be greatly appreciated!! |
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Follow up: I've read more similar threads, adjusted my tables further and auto tuned.
https://www.miataturbo.net/attachmen...ine=1460913428 https://www.miataturbo.net/attachmen...ine=1460913428 https://www.miataturbo.net/attachmen...ine=1460913428 I also disabled EGO control and played with the Acell Enrichments. I set it to 50/50 split between MAP and TPS like I saw another member do with a similar issue. https://www.miataturbo.net/attachmen...ine=1460913428 The car doesn't have as noticeable off-idle stumble anymore, but the AFR still goes super lean for a moment with any throttle input from idle. Am I moving in the right direction here? I would love to hear your feedback! |
Looks like it just needs a little more AE.
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