Two Guys Garage Forum - The eRAM electric supercharger

Big Bry,

This would be a great product to dyno test and talk about on the show. lots of controversy over the concept. Most folks can learn a lot about air flow, by understanding some basic concepts here.

let me know if you folks are interested.

If you havent heard of the eRAM. It is a 1psi axial flow compressor, capable of adding 5% HP gains to stock or modified engines, up to 5 liters /300hp in size and power.

It runs on only wide open throttle, as this is the only time you would want additional HP, and draws about 50amps. At 908CFM produced, it puts out a lot of air flow. With a 3.2 liter porsche engine, we got 10hp to the rear wheels on top of a strong 200HP. (Just adding the eRAM to a stock air box.)

This product has been around since 1997and is now patented.

Let us know what you think about using the eRAM as a topic on the show!

Mark kibort
eRACING
www.electricsupercharger.com
www.928trackcars.com/kibort/

PS, Here is a post made to another group with questions about the eRAM and why it does work:

"The eRAM is a patented Axial flow Electric Supercharger , that increases intake air pressure at WOT by about 1psi, giving internal combustion engines of sizes less than 5 liters, about a 5-10hp net gain to the rear wheels.

Some of the eRAM specs:
908 cfm in free air
1psi net change of intake pressure at flow rates of about 350cfm
50amps, at 13.5volts
24,000rpm
3.5" diameter (flow rates with the eRAM "off" of better than a 3" straight pipe.)
3 lbs of thrust
activated at WOT

Results on the dyno. We have tested numberous 911 porsches at the dyno, (dynojet 248e) and have seen peak torque and HP increases of around 10hp. This test was conducted by us at a racing shop with Terry bernard, a guy that has a ton of dyno experience, and builds Winston Cup engines. (has an engine dyno as well)

the gains are real, and they we even proven by a representive of the porsche list , who also was doubting the cabability of the eRAM.

No, the eRAMs current draw and draw on the alternator doenst negate its possitive effects. Keep in mind, electrical systems dont work that way anyway. The alternator reponds to voltage drop, not current draw. the eRAM drops voltage around 1 volt, and the charging current of the alternator goes up slightly. Depending on the shape of the battery will determine the load on the alternator, up to a max of 80amps. Anyway, even if the eRAM was driving exclusively off the alternator, 50amps is around 1hp, and the gains are 10, so there is no real point to this arguement.

The eRAM is using 1hp of electrical energy to run a fan that is compressing air slightly. Fuel is matched in proportion to the increased air density via the AFM/MAF/CIS an this increase fuel and air charger, albeit only 5% , results in a proportional gain in HP to the wheels. Roughly, it takes about 1hp of mechanical energy to create 1psi at 400cfm or so. slightly less in our case, due to a slight vacuum that is pressent in most air boxes under WOT conditions.

We have seen these gains with the eRAM attached to a stock air box with its own filter in the air box. We have tested it with out an air box, and just a tube with a cone filter. and we have even tested it with the eRAM and its own cone filter, attached to an air box without a filter. Gains were on top of whatever was gained or lost by removal of the air box and its integral filter.

All of our dynos done , start with 3 runs of baseline. then we add the eRAM and do 3 more runs. usually, we take off the eRAM and do a couple more confirmation of baselines. then, we may do more tests , depending on the customer, to test the eRAM on the car but not energized. We have tested a super eRAM (two in series) with them in the "off" position, to find that there is no restriction measureable vs the stock air box or aftermarket intake tube. (we confirmed this at SEMA on a flow bench, as the eRAM flows the same as a 3" straight pipe). the nice thing we can do with this type of modification, is that we can remove it mid dyno run too. (just yank it off) the torque HP curve, immediately drops!! We can even turn it off and turn it back on as well. Compared to a baseline run, the eRAM always adds hp when on, but then why wouldnt it!?

We have used the eRAM on our Speedvision World challenge car (porsche 928 5 liter conversion) it gained 7hp to the rear wheels , we suspect we were getting to the flow limits of a 285rear wheel hp engine (ie close to 340hp flywheel) The car does exceptionally well in club racing for any of you that have seen it at Laguna,Thunderhill,Buttonwillow, or Sears point. a 1:42.7 at Laguna Seca is not a slow time for a street licenced race car, with stock factory engine components, and just headers.
Scot still has the 911 and will also be racing a L-jet 928 this season. It will be configured with a dual eRAM, one on each intake tube. We will post the dyno runs.

I hope this sheds some light on the eRAM. Im more than happy to respond to any questions at all. If you question the dyno runs on our site, give Scot Graham a call or email. He is a NASA race that tested the eRAM at Frey racing and got the solid 10hp.
He is easily reached via the 928 rennlist. "

Regards,

Mark Kibort
eRACING
www.electricsupercharger.com
www.928trackcars.com/kibort