Evo IX with BPU Stage I on 93 - "real world" boost level
i've heard, 1.10, 1.12 and 1.15, however you feel that day, and this is numerous people who dont know each other
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From: 2003 Evo VIII - Silver
The fact is that we run the dyno at 1.10 as we feel this is the closest and most accurate to a so called dyno jet number
Back when I first started using this dyno in August The Shop (name of shop where dyno is) was using a higher correction factor. The dyno was brand new at that time and it took us a few weeks to figure out what the proper correction ratio was.
The main thrust of any dyno - is to use the same correction and settings at the start and end of a tuning or testing session to measure and quantify any gains or losses that may occur.
As I said previously, we have a huge 50" plasma TV which shows everything we are doing in plain view - including the correction factor applied which customers are free to observe and inspect at any time.
Al
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From: 2003 Evo VIII - Silver
I could fill books about what gossip I hear about other vendors - that does not mean its my place as a vendor to publish those remarks on the forum
AL
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21 psi hardly seems worth it. I think my stock Evo would to that in the winter time. :-) Seems to me that 23-24 psi at 3500 rpm is pretty reasonable on a IX. I think its more important to limit the boost at higher rpms (say 19-20 psi at 7000 rpm) where the turbo is going out of its efficiency range.
Gossip or not people are allowed to talk or ask about rumors to maybe get a correct answer direct from the horses mouth to clarify what they heard......you seem to always get very defensive when someone calls you out, makes ya wonder? .....
I could also publish a book on all the flase information that is on this site.....but dont dare question it.
I see a trend with certain dyno tuners who are jacking up the boost for customers on the dyno to achive huge dyno numbers. I think what they must do is then turn down the boost when the car comes off the dyno as no one with a rational mind of going to run about with say 24 - 25 psi of boost on pump gas.
Here is an example of a dyno sheet and tune set up to run a genuine 21 psi peak boost that I recomend
The car had Stage I mods - intake - mbc and exhuast with pump and a reflash by myself
I would like to see the community a little more savy about inquiring what kind of boost is used to get "X" number on a dyno. Jacking up crazy boost and running it with knock counts to me is just a waste of time and not really relevant.


You can see the real world boost levels in the 2nd dyno sheet
For too many members the peak numbers are all they care about
For a savy tuner, the shape of the curve, area under the curve and smoothness are what really matters
AL
Here is an example of a dyno sheet and tune set up to run a genuine 21 psi peak boost that I recomend
The car had Stage I mods - intake - mbc and exhuast with pump and a reflash by myself
I would like to see the community a little more savy about inquiring what kind of boost is used to get "X" number on a dyno. Jacking up crazy boost and running it with knock counts to me is just a waste of time and not really relevant.


You can see the real world boost levels in the 2nd dyno sheet
For too many members the peak numbers are all they care about
For a savy tuner, the shape of the curve, area under the curve and smoothness are what really matters
AL
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