Both ECUs control fuel and timing (and perhaps boost pressure, etc). Are you saying that the fuel and timing were the same on both ECUs but somehow the Hydra magically made 28% more power? I am not sure I agree with your statement that the only change was the ECU. I'm sure the hydra is a much better ECU than the Link but it couldn't make that much difference by itself. Still, impressive numbers. Good job!
On Tue, Aug 19, 2008 at 12:39 AM, Skip Cannon <[EMAIL PROTECTED]> wrote: > I got back from the FM open house today where I had the Caterham (bone > stock '00 1.8 Miata engine except for ECU and injectors) dyno tuned with > the new Hydra ECU. The first run was made no tuning at all and yielded 277.8 > RWHP at 6 psi. Further tuning resulted in 301 RWHP and 261 lb ft torque at > 11 psi. I gave them a redline limit of 7,000 rpm and it was still pulling > strong when he shut it down. > > The attached graph shows the original tuning on the Link system a year ago > with 234 hp and 203 lb ft. compared to the the current Hydra ECU. The only > change to the engine between the two tuning sessions was the replacement of > the Link ECU with the Hydra. > > This was a far greater increase in power than either FM or myself expected. > I was looking to get around 275 hp. Needless to say, it goes like a bat out > of hell and I am very happy with the results. > > We were unable to get the Hydramist water injection working at this time > and when I do get it figured out, it should add 20 - 30 more hp along with a > greater safety margin. > > Skip > > > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > -- Robert McElwee and Blue Flash "The 50 MPG Miata" www.lightweightmiata.com/mpg Lightweight Miata Forum: www.lightweightmiata.com/forum The Miata Trailer Project: www.lightweightmiata.com/trailer
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