I would like to thank Jo at Dragonwerks for having to deal with another rotary at the dyno for the day and for Nik and Jason for helping with the tune.

Dyno sheet will be posted once I can get a copy.

Some pull around 15psi was around 360rwhp. (Basically pulled that first pull)
Last pull around 19.8psi peak with methanol was 400 something rwhp.

This was on a mustang dyno.

There is alot of fuel that can still be taken out and nothing was done to the ignition yet. The methanol/water injection changes the A/F by a full point.

Interesting to note is that the air intake logs did not show much if any difference with the AI on or off.

Going to get the autronic ignition system and then we will remove fuel and play with ignition.

Going to rewire the pump to turn automatically since I have it on a switch right now and we pulled a 20psi pull with out methanol injection cause I forgot to turn it on!!!

 

The stock air intake temp sensor is WAY too slow to react to meth.

 

I don't think Ian is running the stock intake sensor. Congrats to Ian. That was a pretty long day. Next time I'm bringing ear plugs and a respirator.

I smelled of rx7 fumes for the whole day.

Maybe we should have gone for 25 psi. I forget your exact turbo. But what you need is a quieter exhaust. I'm willing to bet after that dyno session whatever fibreglass was left inside the canister is 100% gone now.

 

It was interesting to see the immediate effect of the meth injection on the temp of the intake runner, just after the injector. Using a laser thermometer, we saw an immediate temp drop of 5 - 10F when the meth came on.

 

Ian's injecting so far upstream from the sensor, the sensor's goign to have to get cold for a while to show any difference. Mine shows such a difference on the sensor because the sesnor gets SOAKED when its spraying.

Good numbers though Ian! Dial some more advance into it and see where it gets you!

 

what Ian needs is to start saving his money for new tires. I think you can mount a 275 tire on a 9" rim...

 

Well a dyno pull happens so fast its hard to believe you would get much readings on the intake temp anyhow I will check to see on a long pull on the highway.

The best I did was 400rwhp at 5900rpm at 17.7psi. I think. I have the dyno datalogs at work.


There is more for sure. Remove fuel and add some ignition. I am going to rent the dyno for another day so if your interested you should come on down. Maybe you might want to play as well

We stopped at around 19psi since it was a long day and we figured maybe might be better to have some sort of CDI but it all appeared to be fine with what we were doing that day.

 

The car is certainly squirmy but not as tire shredding as you would think. Mind you I did go through a set of rear tires in one summer (10,000km) when I was running 10psi to 15psi.

FIX YOUR CAR!

 

Ian I hope you are driving around with the car at 20 psi. Did you readjust the boost controller for street loads?

 

I have not driven the car since saturday. This friday I will be rewiring the pump for automatic control and possible adjusting the fuel down abit. (I scheduled this friday off since for some reason I thought it was a race weekend)

I will try and adjust the boost for street load as well but I though it should be close to the dyno load.

(Driving the car at 20psi is instant impound! Remember saturday? )

 

5900 rpm? What's up with that?!?! That's not even stock redline. Next time pull to 7000 at least.

If you're going start playing with the ignition, then get some colder plugs (10s).

 

For some reason that was the highest hp run I did and I let off. The other runs I was shifting at 7000rpm. Once I went to 7300rpm none of those net any bigger numbers.

Thanks for the tip on the plugs. I will look for a set.


I'm going to be using the haltech for boost control as we were struggling with boost control.

 

What is this automatic control you talk about? I'm so out of the loop these days. I barely remember the acronyms.

Once I finish up my precision machinist certificate at Sheridan College (july 2008). I'm going to tare into the rx7. I have way too many projects and loose ends open to tackle such a big project.

Need to finish building new mountain bike, overhauling the stupid lawn mower, finish up classes, garage door to fix... then rx7.

Oh and I discovered fishing is an awesome past time. I caught my first fish the other day... 4 lbs small mouth bass. Too bad bass season is closed and I was trying to fish for either white fish or pike. I got a pike but it ate my lure (friend's lure) and took off.

 

Instead of turning the pump on by hand the haltech will turn it on if past a certain rpm/boost. This way I hopefully will not rnun 20psi with the A/I pump on like we did last weekend.

Yes to many hobbies. So much to do so little time. I haven't went MTB yet this year.

Were do you go fishing around here?

 

hrm... Here are some questions you should consider:

1.) What pressure do you intend to have the haltech activate the pump?
2.) How long does it take for your pump to prime?
3.) Does your system have a 1 way check valve?

Because say you set the haltech to trip the pump to activate at 10 psi. Your pump takes 5 seconds to fully prime. But it only takes you 2 seconds to go from 10 psi to 19 psi. Then what? The alcohol inject opens by PWM but nothing gets injected, if you don't have a check valve what happens if the system back pressures via the intake manifold's pressure from the turbo. I'm sure the map will take a couple of pulls without the water meth injection, but if the water meth system doesn't kick in fast enough you aren't really using the system properly.

 

I think Ian's goign to be setting the turn on fairly low, and the system's prime pretty quickly. Mine primes itself everytime it turns on! lol Its just a nozzle and pump, no fancy injector's on mine. I'd imgaine within 1 sec the system is fully pressurized.

Good numbers anyways Ian! By friday do you mean two days from now? I probably won't be able to make it in that case - and I'm still sorting through issues with my car!

 

Cheng,

1,Pressure could be anything from 1 to 5psi. I will have it also turn on at 4000rpm and or Xpsi and stay on a reset timer for min 10secs.
2,No idea how long it takes to prime. But can't be any worse then the old pulsed A/I pump systems.
3,No check valve. Just internal one in the pump. Nozzle apparently holds the pressure in the line as well.

Classicauto,
Not sure when I will book the dyno. Just let me know when you may have some time.


I forgot to bring the dyno plots from work to post. Maybe tomorrow.

 

I think they are a figment of your imagination.

We need proof.

Just kidding, congrats on the tune. It seems like Jo has the dyno reading well now. Maybe I'll have to make a pass and get a fresh readout to compare.

 

I can vouch for the crazy amount of HP and Torque Ian made.

I'm disappointed that he didn't take me for a spin around the block in his new fangled machine... For shame on you!

 

Here are some pics

 

cool. good job.

Nik awesome hair/beard.

 

Next time I will take you for a spin. But it's instant car impoundage!
Thanks for the pics.......

 

Found an interesting article that may explain these over-inflated Dynojet numbers compared to Mustang/Dynapacks.

From http://www.sdsefi.com/techdyno.htm: "Be aware that SAE correction factors do not apply to turbocharged engines! If your dyno sheet lists SAE corrected HP, ignore it as it is incorrect. You are better off getting an idea of where you stand by looking at observed hp with a turbo engine."

 

The link doesn't seem to work.
Are you refering to SAE weather corrections? ie SAE standard J1349 (Jun 1990)

 

Yes.
I'll they talk about in two different links:

http://www.sdsefi.com/techdynojet.htm
http://www.sdsefi.com/techdyno.htm

See if those work.