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01-04-2024, 10:24 AM | #1 |
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MHDv10 2+ Tune looking for advice to keep going
Greetings- father/son project on our daily driver
I'll do my best to lay out exactly what we have and ask for thoughts and recommendations to continue to enjoy our fantastic little car. Please no judgment, but we love this great value runabout!! and plan to fully enjoy it. Here we go: Its a 6-month owned 2008 135is automatic with MODS All done by the previous owner; he originally intended to track the car but decided to go the M3 route. In the six months since owning, we've just maintained the car and it's run great, but I want to address a CEL that we/he associated with the Catless pipes that we've just been living with. Besides some sweet suspension upgrades, the Car has: VRSF 1.75" silicone intlets VRSF outlets VRSF 7.5 race intercooler BMS DCI VRSF Catless DP VRSF Charge Pipe w/Tial Blow off Valve Vader Solitons 1/4" blow off valve adapter BMS billet PCV valve BMS catch can 24 row oil cooler wit 10AN lines RB turbo oil cooler thermostat delete MHD v10 2+ tune XHP stage 3 trans tune NGK step colder plugs Eldor ignition coils NTK post CAT o2 sensors The Goal: Remove the CEL light associated with the Catless DP only. Reason, I want to address any other issue that may come up without incorrectly assuming it's only the Cat Delete. We haven't pushed the car too much as a daily, but would feel better knowing exactly what we have in case other issues come up. The ASK: What issues would I run into if I decided to go back to stock and reload the MAPs to where it is supposed to be now? I DO NOT want to bring on an issue by trying to be diligent, but I need to buy the Super license from MHD to make changes anyway, so here I am. thanks in advance |
01-04-2024, 10:33 AM | #2 |
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The tune, or tunes plural for the trans, look to be the only true changes to the car. The rest are of course "changes" but just swaps that should give breathing room for those tunes. I don't see anything in the list that would be an issue with the stock map.
Except perhaps for one, the turbo oil cooler thermostat delete. I've seen it, but if it removed a sensor of any sort then there could be a CEL type issue around it. I'm sure it plays with the aftermarket oil cooler and is OK but just something to consider. I think the MHD has an option to disregard the CEL for the catless DP, or simply skip checking altogether. Might look into that? Maybe it can be "turned on" or if it's already on, it means something else is up? I'm not an expert on this, just some thoughts. Others will know more. |
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01-04-2024, 10:55 AM | #3 |
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"Except perhaps for one, the turbo oil cooler thermostat delete. I've seen it, but if it removed a sensor of any sort then there could be a CEL type issue around it. I'm sure it plays with the aftermarket oil cooler and is OK but just something to consider."
Make sense- thank you! Last edited by the bean; 01-04-2024 at 10:56 AM.. Reason: going to edit all together |
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01-04-2024, 10:57 AM | #4 | |
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02-02-2024, 05:21 PM | #6 |
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1) buy MHD superlicense for that car it’s modded and should be running a stage 2+ tune (which will disable the CEL for the dp which is your goal)
2) use the MHD adapter and scan for codes. You will see any issues not just the dp code it will give you a full list. 3) look into common maintenance on these cars and just do the big ones right away preventativly IMHO because every car will need water pump, OFHG, Valve cover and gasket, injectors if you are running an old revision, just do the plugs now and have the fcp warranty for life on them anyway, walnut blasting. There is likely more but off the top of my head those are the things that EVERY n54 will need eventually especially at that mileage unless you’ve got good proof something on that list was done, just do it. 4) enjoy one of the best cars ever made once you get through the mountain of stuff it needs to be happy. |
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