Devilsown Methanol Alcohol Water Injection - View Single Post

BlackSportD · 02-26-2008

I have an 01 Tacoma TRD s/c'ed. I have partial throttle ping as low as 1psi!! Maybe worse seeing that ping can be happening before being audible to me.

(maybe with 145K miles, the carbon build up is owning me, or I should change the fuel filter, cali 91 isn't helping... haven't put a wide band on to see a/f yet)

I've been told that using the 0-5v controller with the MAF is better as far as giving me a progressive curve for ramping up the water/methanol (in this particular situation where its a roots type s/c building boost so quickly). I'm guessing this is in the context that MAP sensors with these kits are being used to see just boost, and do NOT have a voltage output for some realms of vacuum. So by using my MAF, the controller can start ramping up the pump before I start going into possitive boost.

I'm worried that at partial throttle low boost, the MAF voltage will be at a low level. So thus tuning the controller for that level, will also have me squirting water/methanol while cruising on the freeway in vacuum...

So I'm still on the fence on either to use a MAP sensor, or the MAF. If someone knows for a fact that the MAF voltage will be higher in partial throttle low rpm/low speed boost than at high rpm/low vacuum 70mph+ freeway driving, I'll be much more assured with going MAF.

02-26-2008	#1 (permalink)
BlackSportD Water Injection Newb Join Date: Feb 2008 Posts: 8	MAP or MAF I have an 01 Tacoma TRD s/c'ed. I have partial throttle ping as low as 1psi!! Maybe worse seeing that ping can be happening before being audible to me. (maybe with 145K miles, the carbon build up is owning me, or I should change the fuel filter, cali 91 isn't helping... haven't put a wide band on to see a/f yet) I've been told that using the 0-5v controller with the MAF is better as far as giving me a progressive curve for ramping up the water/methanol (in this particular situation where its a roots type s/c building boost so quickly). I'm guessing this is in the context that MAP sensors with these kits are being used to see just boost, and do NOT have a voltage output for some realms of vacuum. So by using my MAF, the controller can start ramping up the pump before I start going into possitive boost. I'm worried that at partial throttle low boost, the MAF voltage will be at a low level. So thus tuning the controller for that level, will also have me squirting water/methanol while cruising on the freeway in vacuum... So I'm still on the fence on either to use a MAP sensor, or the MAF. If someone knows for a fact that the MAF voltage will be higher in partial throttle low rpm/low speed boost than at high rpm/low vacuum 70mph+ freeway driving, I'll be much more assured with going MAF. Last edited by BlackSportD; 02-26-2008 at 12:57 PM.