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Ok I'm starting a new thread about my car, I already know I did this build the wrong way from a money and time standpoint. I've paid twice or more for labor and parts on a lot of stuff so this is by no means a recommended method to build your car. But where I'm at now seems ok but not where I thought I would be. Car is 2001 vert, 342 rear, rpm level VI a4, 3400 stall,
3/4 lg headers and x pipe with z06 it cat back, motor is forged 383 9.5/1 ( custome cam 230/236 116 Lsa, ported ls6 heads ordered as long block from SDPC , stock intake/tb, A&A si v3 supercharger kit with a 3.4 pulley. I thought it would be solid in the 600 hp on a conservative tune, the best the tuner could get was low 500's torque was also in the 500's. I will post what I have for dyno (screen shot). Let me know what you guys think, is this a tune problem or a bad combo for this blower?
Last edited by Forcedvert; 10-08-2015 at 06:17 PM.
What kind of dyno was the car run on?
Does the converter lockup?
Can't tell if the tune is bad without logs.
It's going to very hard for someone to tell you what's wrong with the car without having it front of them.
Not sure what kind of dyno? I will try to find out, I was more wondering about numbers, and how graph looks does it seem substantially low for set up? And does it look erratic to you? I have no idea? Are the logs something I should be able to just ask for? My mechanic is not the tuner and getting answers out of him is not easy as I'm out of town.
Numbers are low that combo you have should make almost 500 rwhp with out the blower it's like it's not making boost.
I really would like to see you get it working good
Numbers are low that combo you have should make almost 500 rwhp with out the blower it's like it's not making boost.
I really would like to see you get it working good
It does seem almost like mostly motor? Torque numbers are almost as high as hp, most centrifugal blower numbers I've seen torque is substantially lower than hp?
I brought this up in another thread that when I talked to Josh at a&a about motor and comp ratio after I had it on order he did say they have had issues with stroker motors and getting over 500 hp with this base kit without a higher static comp ratio! I guess I was hoping he was wrong. So maybe someone reading this has had this result and overcame it. Just wondering the easiest way to get 650 from this point?
It does seem almost like mostly motor? Torque numbers are almost as high as hp, most centrifugal blower numbers I've seen torque is substantially lower than hp?
I brought this up in another thread that when I talked to Josh at a&a about motor and comp ratio after I had it on order he did say they have had issues with stroker motors and getting over 500 hp with this base kit without a higher static comp ratio! I guess I was hoping he was wrong. So maybe someone reading this has had this result and overcame it. Just wondering the easiest way to get 650 from this point?
Not sure what kind of dyno? I will try to find out, I was more wondering about numbers, and how graph looks does it seem substantially low for set up? And does it look erratic to you? I have no idea? Are the logs something I should be able to just ask for? My mechanic is not the tuner and getting answers out of him is not easy as I'm out of town.
If the smoothing factor is low it can look erratic. I doubt they will give you logs I'm just saying we can't diagnose your issues with half a dyno sheet and your build specs.
See if you can get a dyno readout that includes MAP (psi) and air fuel.
What's the deal with the AFR #s at the lower left of the graph? I don't know anything about tuning so I don't know at what point that data was taken, just thought I would bring it up for someone experienced.
What's the deal with the AFR #s at the lower left of the graph? I don't know anything about tuning so I don't know at what point that data was taken, just thought I would bring it up for someone experienced.
Was the converter locked when they dynoed it?? (It looks like it was by the chart but....). If the converter was unlocked, that could be 50-100hp loss on a loose converter.
If it was locked, you are down atleast 100hp...or more. Hard to say without all the data and a good chart to analyze...
Take it to the track and see what it runs... If it goes atleast 132-133, you are probably ok.
When you're ready, get with me for a HPTuners module. I'll take the time to show you the basics, write some config files and get you in a position to log the car. Then we can look over the tune and logs and get you some hard facts.
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When you're ready, get with me for a HPTuners module. I'll take the time to show you the basics, write some config files and get you in a position to log the car. Then we can look over the tune and logs and get you some hard facts.
That's the only way your going to know what's going on. Otherwise your pulling ideas from a hat.
I can see you looking for an easy fix, but it doesn't always work like that.
10-08-2015, 05:43 PM
383 build below expected results
but not where I thought I would be. Car is 2001 vert, 342 rear, rpm level VI a4, 3400 stall,
looks lean..
