Would vishnu tuning happen to have a 9.8 vs. 10.5 turbine housing dyno graph compare running 91 octane with a stg 1 or stg 1+?

Is there anyone out there who has performed this compare themselves & have or know where to see a dyno compare like this?

There have been some recent post's regarding the benefits of going to the larger 10.5 turbine housing which look awesome. Unfortunately, this testing has been done on 93 or 100 octane.

Results are nice, however I would like to be able to pass judgement on 91 octane.

 

anyone?

There's all this talk about increased mid range, but the post's I have seen, the gains are due to higher boost levels while running on something other than 91 octane.

I am looking to make as much low-end umph on 91 octane, without having to go to a larger displacement engine, that's why I ask.

 

no 91 octane compares?

 

The 10.5 housing upgrade does make more power, even on 91oct. Without having done any scientific testing (same car, same day, same conditions, same tank of gas, etc,.) it's hard to say exactly how much. I'd wager a guess at saying that peak power gains are around 5-10whp. However, the power gains in the midrange and above 6500rpm are far more significant. Yes, it's a good worthwhile upgrade with very little downside (if any), IMHO.

shiv