Remapping an engine would mean altering the ignition, cam timing, Air/Fuel mixture in order to extract more power. That in simple terms means getting your engine to increase the amount of air it breathe and extract along with increasing or decreasing the fuel levels injected into the combustion chamber.
Now doing that to a fully stock engine would give very little gains (area under the curve) compared to an engine with some modes on it, but it would better out the drivability of your car. WHY??!! Well its simple, you are remapping the engine with the same restricted OEM induction system (no sufficient amount of air) and a restricted exhaust system. So even if altered ur timing to open wider for more air where would it come from and how can it be exhausted with the OEM systems.
From my experience working on cars i wouldn’t go for a remap at first and specially if i am planning to install some modes on my car. I would first go ahead with my modes that would improve the breathing characteristics of my engine such as a good induction kit along with a higher flow exhaust system, and maybe a higher grade cam. After that i would ask for a tune that would utilize all the modes i've installed to achieve the highest gain possible that would be extracted along the power band of the engine.
In my case and on my previous iDingpower M3 i tried to install the famous Alpha-N tune that would delete the MAF functions and use the RPM and TPS to determine the amount of air going to the engine, but i didnt have the CF plenum that would increase the amount of air injected as required and i did not gain any noticeable ponies so i reversed back to stock.
Sorry for the long post guys, but this is directly from a person who has a hands on experience with cars (spent more time under the car than on my bed :)) go for it after you are done moding your car, but if you want to do it to slightly improve the drivability/consumption and gain few butt dyno HPs then go for it :)
That doesnt include any BMW with a force induction system (e.g 335i :D)
Now doing that to a fully stock engine would give very little gains (area under the curve) compared to an engine with some modes on it, but it would better out the drivability of your car. WHY??!! Well its simple, you are remapping the engine with the same restricted OEM induction system (no sufficient amount of air) and a restricted exhaust system. So even if altered ur timing to open wider for more air where would it come from and how can it be exhausted with the OEM systems.
From my experience working on cars i wouldn’t go for a remap at first and specially if i am planning to install some modes on my car. I would first go ahead with my modes that would improve the breathing characteristics of my engine such as a good induction kit along with a higher flow exhaust system, and maybe a higher grade cam. After that i would ask for a tune that would utilize all the modes i've installed to achieve the highest gain possible that would be extracted along the power band of the engine.
In my case and on my previous iDingpower M3 i tried to install the famous Alpha-N tune that would delete the MAF functions and use the RPM and TPS to determine the amount of air going to the engine, but i didnt have the CF plenum that would increase the amount of air injected as required and i did not gain any noticeable ponies so i reversed back to stock.
Sorry for the long post guys, but this is directly from a person who has a hands on experience with cars (spent more time under the car than on my bed :)) go for it after you are done moding your car, but if you want to do it to slightly improve the drivability/consumption and gain few butt dyno HPs then go for it :)
That doesnt include any BMW with a force induction system (e.g 335i :D)
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