I think in going to try meth... - Honda Accord Forum : V6 Performance Accord Forums
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Old February 4th, 2015, 09:54 AM   #1
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I think in going to try meth...

That's what I told my girlfriend when I got home from work today. She wasn't amused. Anyway, I've been doing some research on methanol / water injection. Living in southern arizona, my engine is usually already heat soaked even from a cold start. In the winters I can easily see a difference in performance when the temps drop to 40F. To put this difference in perspective, I usually run a 6.0 second 0-60 in the winter. In summer it's closer to 7.5 seconds. So here's what I'm thinking. By utilizing M/W injection I can lower intake temperatures which would boost output. Ontop of this, it's been said that using higher octane fuel in our engines causes the ECU to increase timing, resulting in a +10hp / +10tq increase. I've also been doing research on CAIs vs SRIs. Apparently SRIs suck in more air due to less piping restrictions, where CAIs generally result in more power due to the colder intake. I figure if I match this M/W injection setup with a SRI, I can get the best of both worlds. I wanted to know if the increased humidity caused by the water portion of the mix would decrease performance, and if so by how much. Would this nullify the benefits of M/W injection? Will the ECU recognize the boost in octane if delivered independently of the fuel injectors and compensate the timing? My basic idea for a meth injection setup is attached (excuse the ****ty drawing skills). As you can see in the picture, I want to add a spacer between the throttle body and intake manifold, with a hole drilled for the M/W injector (Figure B). I read that putting the injector before the butterfly valve can cause some problems, so I thought it'd be better to do it after the TB. For this to work, I would have to somehow elongate the threaded rods protruding from the intake manifold (Figure A). Is this something that could be done? Can these rods be removed and replaced with longer ones? If not what other options are there? I also wanted to know if I could drill a hole for the injector in the back side of the intake manifold (Figure D). Would there be enough vacuum at this location to effectively suck in the mixture? Misc. Question: - Where is the intake temperature measured from? I have an OBD2 bluetooth reader with the torque app which shows me the intake temperature reading, and wanted to know where this sensor is located.
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Old February 4th, 2015, 09:55 AM   #2
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****. Can't upload the pic from my phone. I'll do it after work.
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Old February 4th, 2015, 10:59 AM   #3
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unless your increasing CR, running wild camshafts, or boost. You will not see the full benefit of running meth. Cooling effect is only benefits if your spraying constantly. As soon as you let off IAT temp bounce back up. Trust me I had the same though going in as you. More cooling = denser air. Is only true if the meth is constantly spraying. Mine is trigger through injector pulse width.

I am using the Aqua Mist HF2

look at my build thread. I should have a pix of my w/m kit. I am leaving it there for future upgrade such as Nitrous since it seems like the j30 ring land will not tolerate boost for prolong period.

I am using a P2R throttle body space for its 1/8 NPT hole. It sprays after the TB.

O another thing is Methanol is corrosive to Aluminium, it leaves a weird white residue.

Last edited by thisaznboi88; February 4th, 2015 at 11:10 AM..
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Old February 5th, 2015, 03:10 PM   #4
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I am running a meth kit on my car and it is still just used as a safe guard. Even at 13psi i am seeing no real benefit from it. I would not waste your money.
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Old June 26th, 2016, 11:09 AM   #5
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Meth Kit?

Wouldnt the meth kit eliminate the need for race fuel?
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Old June 26th, 2016, 01:10 PM   #6
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No meth is just a temp fix. There will be a point where it won't help. So either 100+ octane or e85 for more safety
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Old June 26th, 2016, 01:26 PM   #7
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if your not forced induction i wouldn't bother. Water/meth is extremely beneficial if used before the air is being compressed so it negates the increase in air temp

Works amazing on my settup, on a 80 degree day ill be running 105 IAT, then after one pull (boost activated water/meth) my IAT will drop to ambient or sometimes even below surprisingly.
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Old June 26th, 2016, 01:40 PM   #8
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I ran it while I was n/a it did help a little bit with knock supression while I was getting tune for high advance. But if you don't have a way to tune it then you will see zero benefit and like he said on a n.a motor it is minimal besides seeing lower IAT.
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Old June 26th, 2016, 03:19 PM   #9
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What helped my heat soak issues in the Dallas area (not Phoenix heat but we do regularly top 100 in the summer) was after I got my AEM v2, I relocated the IAT to the port on the intake. No more soggy throttle response leaving lights in the summer now, which is where the heat was affecting my car the most.
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Old June 28th, 2016, 06:44 AM   #10
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Meth keeps your heads cleaner as well no?
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Old June 28th, 2016, 07:01 AM   #11
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Quote:
Originally Posted by State.Of.Prime View Post
Meth keeps your heads cleaner as well no?
the water portion does.
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~~FlashPro dyno-tuned by innovative-motorworks (383whp/313wtq @ 7.5 psi without boost controller)~~
~~FlashPro e-tuned by Domgsr-t (405whp/345+wtq) @ 8.5psi ~~ **currently running**
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