Tons of meth - good or bad...
they have the plots and the numbers.
Come help me sort out my hsf-1 lol but seriously... 
Oct 18, 2007, 05:19 AM
#21
My thinking is to run as little as possible to achieve your purposes. That way there is less risk in case there is a problem with the kit (because you don't have to tune as aggressively), and you also are going to be using less alcohol (lower cost, less extra weight and fire hazard in the car, etc.). In addition, I really question delivering too much fuel via the throttle body. The intake manifold was designed to evenly distribute air to the 4 cylinders. Not sure it will ensure similarly even distribution of an alcohol vapor? Also, even with the DDS3, I think there is a certain amount of additional exposure you have to engine damage when injecting too much. The DDS3 isn't going to cut boost if you are above the minimum WL flow level, which in the case of a big nozzle setup, is going to be way way lower than your flow at max boost and high RPMs. In other words, the flow window gets wider and wider as you inject more and more, and thus the failsafe becomes less and less effective at helping in the event of a condition that reduces flow but doesn't cut it off all together. This is of course an argument for a second AFR or EGT based failsafe like the TTP setup, but not everyone wants to spend on that.
Oct 18, 2007, 05:36 AM
#22
The more meth the more boost you can run. More timing, more power. The meth doesn't just get poured into your manifold ...it atomizes(majority of it) and basically gets carried wherever the air goes...all 4 cylinders.
The only prob some may face is not being able to achieve enough spark for the large amounts of meth(solution; different spark plug setup, ignition amplifier,turn up the boost..etc)
Failsafes have been covered many times. Different options different vendor combos you can do. If you can't afford the failsafe and want to run meth don't waste your time. Meth is a like a big turbo kit and the owner says, "i want to only run 18psi"
MEth is a MUCH cheaper alternative to race gas, if you have purchased the failsafes.
The only prob some may face is not being able to achieve enough spark for the large amounts of meth(solution; different spark plug setup, ignition amplifier,turn up the boost..etc)
Failsafes have been covered many times. Different options different vendor combos you can do. If you can't afford the failsafe and want to run meth don't waste your time. Meth is a like a big turbo kit and the owner says, "i want to only run 18psi"
MEth is a MUCH cheaper alternative to race gas, if you have purchased the failsafes.
Oct 18, 2007, 08:46 AM
#23
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Are you mixing any upper cylinder lub in with your mixture? I would think running that much would take a toll at your lubrication and cause wear fairly quickly unless you are.
Oct 18, 2007, 10:32 AM
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i run the same setup as your race car - on @10psig up, off below 10psig.
flow rate is 16gph constant
no egt - to lazy to drill manifold
afr now hovers 12.0 +/- 0.3 WOT
flow rate is 16gph constant
no egt - to lazy to drill manifold
afr now hovers 12.0 +/- 0.3 WOT
Last edited by SlowCar; Oct 18, 2007 at 10:50 AM. Reason: better of dyno log