Search results

The shaft power to make say 10psi of boost at say 70% compressor efficiency will be the same at the same mass flow irrespective of whether there a turbine is driving it or an electric motor. However the electric SC may be flowing more mass at the same engine rpm/boost due to lowered exhaust...

Did some messing with Matchbot and came up with 6% for the 20C drop in temps I'm seeing which is equivalent to around 15whp. I think the logs would show something if I was getting that much but I still think there are other factors in play as mentioned above.

I guess I was hoping for some extra after seeing what happened with Alex's meth injection setup. Would have thought it was more than 1% for 10C?

I'm in NZ too. Bought two sets of batteries off AliExpress. They took about twice as long as when buying other stuff but arrived in good condition nevertheless.

Update : Fitted water/meth kit . Just a single nozzle to the volute. Has dropped IATs by at least 20C and improved midrange but no difference in peak power. I suspect boost is actually dropping even more than before ( IE cooler air but same power at lower boost ) due to batteries unable to keep...

True. I was alluding to WHP above.

Thinking about why we get so much power for so little boost. ........... Saying 14.7psi should double the power assumes that all the things that rob power from an engine will still be doing that at the same percentage of the total as you raise boost. This isn't what actually happens. The water...

That virtual dyno result was on a cool morning (18C) before the engine/eSC was heatsoaked. It's the best result I've seen so far so possibly it's a little flattering. Pretty much every log is over that 234 mark however so it does seem to be doing particularly well for the amount of boost there is.

Took the car for a decent drive through the 'twisties' a couple of days ago to see how long the batteries would last etc. Managed 24 mins of 7/10ths driving (public road so not going too wild) before the batteries ran out of juice. The ambient temp was 22C and the batteries reached 45C max...

yes ..3.5psi ESC starts the motor from a signal I'm taking off the car ECU for rpm. Put this in series with a vacuum switch so it's load/rpm based. Only reason for not using a BOV is that I'm not running enough boost to need one - nothing to do with electric or not.

Not measuring it but going off the flow chart it should be around 24000rpm.

Update: Fitted new CNHL 90c 9500mah batteries. Didn't really notice much difference but they do at least last a bit longer than previous ones and hopefully wont overheat when pushed. Also fitted larger 15T pinion. Made a little bit more power, but in testing (after a short period of heat soak) I...

Update : Just came back from a test drive on a windy road. Wanted to test viability to see if the eSC is actually worth having in this scenario. 1/ Still on cheaper batteries so I expect improvement once the new ones arrive. 2/ Was able to drive hard on and off the boost for about 10 mins before...

Go on here and have a play with the numbers ...

Thanks maticulus. I actually do heaps of turbo tuning for these cars so am well versed on the nuances of getting the maf sensor setup right. I knew it would be a challenge to tune the way I have it, but seeing as I'm a tuner, I thought I'd give it a crack. The are some advantages to having it...

No BOV - no strange noises so far so don't think I need one at this boost. Main challenge is getting batteries good enough to hold voltage over an entire pull. Hopefully these new CNHL9500 90c jobs do the trick. Ratio is 14 drive to 18 driven. Just borrowed a device to read max. amps. Was 100...

Power gains look like they as I hoped - 57whp up top with 30-40 all the way through. Log was done on a fully charged battery- with new batteries I should get at least this consistently as they become discharged. Red/blue is with eSC at 3.5psi Green/yellow is the stock engine before SC was fitted.

Had been interested in doing this for years but It wasn't till I came across Alex's videos that I was inspired to give it a try. However, I'm not interested in drag racing, I wanted a system suited for everyday practical use. So I had some challenges to achieve that but do now have a working...

The fastest spooling turbos in the world .... Borgwarner EFR series 8374 or 9180 with a twin scroll housing. Why add complexity when you can just change the turbo?