PCV valve & catch tank idea
06-10-2004, 10:50 PM
#17
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FQS4
Hi Todd,
Check out my other post somewhere on the list of threads on today's dyno testing. These tests were done on FQS4. I have tried running my car using FQS1, but even with a 20% mix of toluene it still pings above 15psi. At FQS4, I do not get any pinging. Typically I am running at least 10% toluene because So-Cal 91 octane gas absolutely sucks.
With that said, there is a noticeable improvement in throttle response using FQS1. The engine really wakes up with the extra 2 degrees of timing advance. When I have time, I'm going to run some real 100 octane race gas with the FQS1 setting and see if I can squeak out some extra power on the dyno.
On a different note, while we were dyno testing today I was able to check my PCV experiment, albeit in a less-than-scientific manner. While the dyno operator was running the full throttle acceleration, I put my thumb gently over the end of the PCV discharge hose. Sure enough, as the car hit around 3500 rpm there was a gentle "puff-puff-puff" of air coming out of the hose. Not a steady flow of air, but more of a series of quick, evenly timed bursts. Then somewhere around 5000-5500, the PCV valve slammed shut so fast that it created a momentary vacuum in the hose strong enough to suck my thumb firmly against the hose end!! Anyways, I have to round up another oil cap from the junk yard and try a softer PCV valve. But it works!! Backyard scientists of the world rejoice!!
Greg W.
Check out my other post somewhere on the list of threads on today's dyno testing. These tests were done on FQS4. I have tried running my car using FQS1, but even with a 20% mix of toluene it still pings above 15psi. At FQS4, I do not get any pinging. Typically I am running at least 10% toluene because So-Cal 91 octane gas absolutely sucks.
With that said, there is a noticeable improvement in throttle response using FQS1. The engine really wakes up with the extra 2 degrees of timing advance. When I have time, I'm going to run some real 100 octane race gas with the FQS1 setting and see if I can squeak out some extra power on the dyno.
On a different note, while we were dyno testing today I was able to check my PCV experiment, albeit in a less-than-scientific manner. While the dyno operator was running the full throttle acceleration, I put my thumb gently over the end of the PCV discharge hose. Sure enough, as the car hit around 3500 rpm there was a gentle "puff-puff-puff" of air coming out of the hose. Not a steady flow of air, but more of a series of quick, evenly timed bursts. Then somewhere around 5000-5500, the PCV valve slammed shut so fast that it created a momentary vacuum in the hose strong enough to suck my thumb firmly against the hose end!! Anyways, I have to round up another oil cap from the junk yard and try a softer PCV valve. But it works!! Backyard scientists of the world rejoice!!
Greg W.
06-10-2004, 11:10 PM
#18
Burning Brakes
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what is the FQS settin gof 2 or 3 like Gregg?I am in NorCA same ****ty gas..but hate to use FQS 4...I got the waterijection so I can help with detonation what do you think..I am running vitesse 93 octane chips...
06-10-2004, 11:14 PM
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I asked Danno about FQS 2 & 3 and he said don't use them with stock injectors. So, for his 18psi chips that come with the 3 bar FPR and the Reliaboost, he recommends FQS4 for pump gas, and FQS1 for race gas. Of course, my car is nearly bone stock compared to yours!
Try a little toluene mix -- I'm picking it up for $6.80 a gallon at the local paint store. If I dilute it with 9 gallons of gas to make a 10% toluene/90% gas brew, it's only an extra 76 cents per gallon.
Best Regards
Greg W.
Try a little toluene mix -- I'm picking it up for $6.80 a gallon at the local paint store. If I dilute it with 9 gallons of gas to make a 10% toluene/90% gas brew, it's only an extra 76 cents per gallon.
Best Regards
Greg W.
06-10-2004, 11:22 PM
#20
Burning Brakes
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I am using toluene/xylene mix..1 gallon tol//1/2 xylene but have heard that the toluene we get is not the pure type ...I strongly suggest waterinjection!
I wonder what FQS 2 and 3 would do for me? I have bosch 52 injectors.....
I wonder what FQS 2 and 3 would do for me? I have bosch 52 injectors.....
