WTF
09-09-2008, 05:20 PM
#31
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Join Date: Apr 2008
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09-09-2008, 06:08 PM
#33
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Join Date: Apr 2006
Location: Goodyear, AZ
Posts: 1,631
Hey casey....did they improve things greatly for the series II or would you make the same statement for it as well......"hard to make good hp."
Does the series IV really improve it that much? It's only a couple more HP gain than both the series I and II.
Sorry to divert the conversation......00 425 saleen.....try casey's recommendation....but ultimately if it doesn't work out i'd get another recommendation and take it to another tuner to check it out.
Also...did they put in a wideband O2 sensor to monitor the A/F ratio? Where are the monitoring it at?
Does the series IV really improve it that much? It's only a couple more HP gain than both the series I and II.
Sorry to divert the conversation......00 425 saleen.....try casey's recommendation....but ultimately if it doesn't work out i'd get another recommendation and take it to another tuner to check it out.
Also...did they put in a wideband O2 sensor to monitor the A/F ratio? Where are the monitoring it at?
#1 No and Yes.
#2 The series 4 is a whipple head unit 1.6L. The 03-04 E cars had a 2.3L version. Much better blower, but the same basic manifold and intercooler has series 1 & 2.
Botton line, if you want to make Good HP on a 2V with a PD blower, buy a KB
Casey
09-22-2008, 11:32 PM
#34
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Join Date: May 2005
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Posts: 2,118
What's baseline? Sorry I'm a noOb with 4.6L engines.
I re-gaped my plugs to.035 and it feels a little better. I ran out of time, but I'm gonna change out the fuel filter next then take it to another tuner.
Evil, they put the O2 sensor at the H-pipe on the left side.
I bet with the re-gapping of plugs and a few extra degrees of timing and another tune I should be ok... I hope.
I re-gaped my plugs to.035 and it feels a little better. I ran out of time, but I'm gonna change out the fuel filter next then take it to another tuner.
Evil, they put the O2 sensor at the H-pipe on the left side.
I bet with the re-gapping of plugs and a few extra degrees of timing and another tune I should be ok... I hope.
09-23-2008, 06:55 PM
#35
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Not yet. I'm going through some rough patches at home so I've been putting it off. But I did get the number of a couple of other tuners in my area.
I gapped the plugs at .035 and replaced my fuel filter. I took a temp reading of the intercooler water at the tank after driving around and the highest it got was 87-89 degrees.
I noticed that engine knocks when I accelerate sometimes, especially in 5th gear.
Doesn't that only occur when the timing is too advanced?
Last edited by 00 425 SALEEN; 09-23-2008 at 06:58 PM.
09-24-2008, 03:27 AM
#36
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Join Date: Apr 2007
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Not yet. I'm going through some rough patches at home so I've been putting it off. But I did get the number of a couple of other tuners in my area.
I gapped the plugs at .035 and replaced my fuel filter. I took a temp reading of the intercooler water at the tank after driving around and the highest it got was 87-89 degrees.
I noticed that engine knocks when I accelerate sometimes, especially in 5th gear.
Doesn't that only occur when the timing is too advanced?
I gapped the plugs at .035 and replaced my fuel filter. I took a temp reading of the intercooler water at the tank after driving around and the highest it got was 87-89 degrees.
I noticed that engine knocks when I accelerate sometimes, especially in 5th gear.
Doesn't that only occur when the timing is too advanced?
09-29-2008, 03:09 PM
#37
Join Date: Jul 2008
Location: Lake Forest, CA
Posts: 21
In regards to your "knocking", you want to do a few things. One is, yes, if it is under boost you want to check the timing. If it is too advanced, that will cause it. Most fuel management systems start retarding the timing when under boost. Watch out for systems that just throw more fuel at it and hope it doesn't detonate.
Second, if you are running lean, then enriching the fuel mixture actually LOWERS the combustion temps, keeping the mix cooler and not letting it explode before it should.
There are many variables to look at. Another cause is carbon buildup on the piston top or valves. The clumps of carbon retain heat, just enough to ignite the fuel and air when there is compression, kinda like a diesel engine.
As for octane, that is the additive to resist combustion upon compression. The higher the octane rating, the higher compression you can go without the mixture lighting off before the spark. That's why some people run X amount of boost on pump gas (91 octane) and then run X+ boost on race gas (100 octane or whatever they use). The engines are mapped according to what kind of fuel they use.
The last thing is some vehicle have knock sensors onboard. Once the ECU detects "knock" it retards the timing to eliminate it. It works, but you should stay away from knocking in the first place. A wideband lambda and EGT sensor would be best to use to see how your engine is running.
Second, if you are running lean, then enriching the fuel mixture actually LOWERS the combustion temps, keeping the mix cooler and not letting it explode before it should.
There are many variables to look at. Another cause is carbon buildup on the piston top or valves. The clumps of carbon retain heat, just enough to ignite the fuel and air when there is compression, kinda like a diesel engine.
As for octane, that is the additive to resist combustion upon compression. The higher the octane rating, the higher compression you can go without the mixture lighting off before the spark. That's why some people run X amount of boost on pump gas (91 octane) and then run X+ boost on race gas (100 octane or whatever they use). The engines are mapped according to what kind of fuel they use.
The last thing is some vehicle have knock sensors onboard. Once the ECU detects "knock" it retards the timing to eliminate it. It works, but you should stay away from knocking in the first place. A wideband lambda and EGT sensor would be best to use to see how your engine is running.
09-29-2008, 05:12 PM
#38
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Nice try thoughhttp://en.wikipedia.org/wiki/Engine_knocking
Last edited by 06Saleen3V; 09-29-2008 at 05:15 PM.
09-29-2008, 05:35 PM
#39
Join Date: Jul 2008
Location: Lake Forest, CA
Posts: 21
Ok, checked out the link and saw this...
...enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder; reducing peak cylinder pressure by increasing the engine revolutions (e....
More fuel make it burn cooler. Less fuel causes it to lean out, raising temperatures. Have you seen or used an EGT gauge? Before widebands were widely available, more tuners (turbo or supercharger applications) used EGT gauges to watch for the lean condition and obviously avoid detonation.
Octane is an additive to gasoline to raise the fuels ability to resist combustion upon compression. Yes, if you raise pressures, you will have an increase in temperature. If you have the correct amount of Octane, you won't detonate.
In his example, with such a low RPM, 5th gear, with load, probably 1 or 2psi, he's knocking like most vehicles with carbon build up.
...enriching the fuel/air ratio, which adds extra fuel to the mixture and increases the cooling effect when the fuel vaporizes in the cylinder; reducing peak cylinder pressure by increasing the engine revolutions (e....
More fuel make it burn cooler. Less fuel causes it to lean out, raising temperatures. Have you seen or used an EGT gauge? Before widebands were widely available, more tuners (turbo or supercharger applications) used EGT gauges to watch for the lean condition and obviously avoid detonation.
Octane is an additive to gasoline to raise the fuels ability to resist combustion upon compression. Yes, if you raise pressures, you will have an increase in temperature. If you have the correct amount of Octane, you won't detonate.
In his example, with such a low RPM, 5th gear, with load, probably 1 or 2psi, he's knocking like most vehicles with carbon build up.
09-29-2008, 06:45 PM
#40
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Join Date: Apr 2007
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It seems like we were talking about two different things here. I was talking about combustion temperatures and you were talking about the cooling effect as it relates to enriching the fuel/air mixture. Sorry for being blunt earlier, not having the best day