Quote:
Originally Posted by xlr8nflorida
Per Marc H.
LT5's with the OE compression ratio of 11:1 are normally not detonation limited in terms of spark advance. That is, typically as spark advance is added the power drops off before the engine goes into detonation. A methanol injector will not make a difference, except.
If you want to run the car hard when the ambient temperature is over 90 degrees detonation can be a factor and methanol will help.
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That is an over simplification aimed at minimizing the attributes of methanol injection. That is to say it is locking the system into a one dimensional box.
If you add other variables, and this is just to add one, an actual true standalone ems, capable of more precise handling of the engine management, you will see good strides imho.
There are many more advantages to running meth that just preventing detonation. I run one on my direct injection audi rs4 to prevent carbon buildup on the valves. Carbon buildup is a well known horsepower robber in FSI engines, and can rob engines with as little as 20k miles of 50 hp or better.
I again reiterate my earlier statement for one to do their own research, and even try running one to give real world data. I am putting one on my lt-5 project, along with a ems, and between Pete and I, I can guarantee you will be updated on the results, as we have a sort of wager on the outcome of running a more modern ems on the engine.
BTW, for what it is worth, my audi rs4 is a n/a engine, and with installation of the snow methanol injection kit I picked up 18 awhp. With the additional loss through a awd platform compared with a rwd, if it was consistent (not claimed by me) between the two platforms you do the math. You should also be able to see the benefits of limiting carbon buildup.