Recent content by spins4

After a bad supply of methanol (possibly contaminated, or pre-mixed with lube by the race shop I was buying it from) killed my alkycontrol pump (started leaking), I called up Julio. He told me to bring it in and he would look at it. He ended up replacing the pump for me, no questions asked and...

[TAMPAish AREA] Well after having a problem with bad methanol killing my alkycontrol pump (which Julio took care of! Talk about customer service!!) I went to seek out sealed containers of VP M1 Methanol which I have used in the past with 0 problems for years. Buying it sealed ensures no funny...

Thats actually not true. As you approach the limits with gasoline, you will get detonation, which is easily discernable from normal engine noise & operation. Detonation happens after the spark event. On a mostly methanol fueled car, you do not get detonation. Your car will be happily singing...

With a spark cut revlimit you will be fine. The situation which poses problems is with fuel cut type revlimiters. Imagine this: car is moving along, hits the revlimiter the fuel injectors get cut, but the alky keeps spraying-- what you basically have here is an EXTREME lean condition on alky...

You need to quantify a few things to understand how much you are spraying: first question is what is your alky / gasoline ratio? If your fuel map is tuned for 11.0 off the alky, how much fuel are you pulling out to get back to that same AFR? This percentage would be the alky you are spraying in...

The only way to know if you are spraying 'enough' alky for the current settings is to check for knock. Best way is to read the plugs. Its no secret the more alky you spray IF PROPERLY TUNED, the more power you can make. There's a reason why full Methanol cars will make more power than their...

I guess we should go back to square one, which is, what are you trying to achieve by doing pre-turbo injection? I can tell you I sprayed pre-turbo for 1yr and saw no effects on the turbo at all, regardless of what that turbo mfg. told you, those were my results. Although this was a good...

Also you have to consider the if its worth explaining to someone that says "methanol is a poor fuel" , the correct concepts. Most likely it will be a battle you can't win.

I was doing pre-turbo (in addition to post turbo) spray on my car when I had a DSM...didn't see any noticable compressor wheel wear. But I wasn't doing pre-turbo for longer than a 1year (when I sold it). If you get a nozzle that atomizes well, it shouldn't be an issue. For reference this was...

I think it should be made clear that calc should only be used for those trying to determine how much charge cooling they are after. Reducing the AIT is only one piece of the puzzle. Even if you have ambient, or ambient-10degF air entering the motor, that doesn't ensure you will be detonation...

Yes that is exactly correct. Here is a a very simplified explanation of how a wideband works, which may aid in understanding: There are 3 essential parts to a wideband oxygen sensor which are using for arriving at an lambda reading: the Nernst cell (which is also composed of the reference...

Yes, the difference is exactly what you stated-- displayed AFR on the wideband is NOT your true "AFR". Just target the AFR you normally would running race fuel (mid 11s if thats what works for your car) and go from there. To understand, its best to think in terms of lambda. The wideband...

I actually wrote those posts. I'm 'racegate' on that board. :D And its not irrelevent for target numbers on a wideband, but to calculate your ACTUAL AFR for fuel calcs, you need to correct for the mix of fuels to know your real air to fuel ratio.

The vari-cool looks very cool. Ok, I know that was lame. :) But the programmability of the unit looks very interesting. Anyone on this forum using it with success? How do you like it? My current setup of direct trigger via my ECU works fine..but what can I say, I'm a junkie for tinkering when...

Thanks for the reply guys... Yea I did buy the pump+controller, but I didn't install the controller becuase the way I trigger it is working fine for me.. so I took the 'if it ain't broke don't fix it approach' ;) I already was on twin nozzles when I ran that time, I was just curious when...