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Gborja888

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  • Location
    Beijing, China
  • Car
    Subaru Legacy 2010 2.5i
  • Interests
    Basketball, cars
  • Occupation
    Technical Consultant

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  1. Hi Ed, thanks for the advice. I'm almost ready to start my test run in a couple of days after some more adjustment. Spring time already starts as the sunset is getting later these days. I'm happy that I could start testing the car again on my way home back from work.
  2. Hi Ed, This is for the old SC, once my tuning is over and weather not too cold anymore, I will recreate the before and after test comparison again.
  3. I didn't logged my battery voltage, but I have a battery gauge meter side by side with my boost gauge, I could see the voltage dropped down to about somewhere 13.5 to 13.8V. My voltage is usually about 14.7V with the engine on. I have actually enabled my logging of the battery voltage last night, will get this data available from here on.
  4. As promised, please find below the link to the video of the e-SC activation (video1) as well as the power consumption when the e-SC was activated. I think the video didn't show justice of how powerful this e-SC really was, when I was there personally, I could really feel it when it started spinning and how strong it blows air.
  5. Finally had a chance to do a 2nd gear WOT run the other day with the new eSC after the snow melted last weekend and also making sure that I don't have that much knocking anymore with the new SC. Although I still need to do some minor adjustment after the latest WOT run. Below is the result of the WOT run: 1. Reached the peak boost of 2.5psi @2600rpm (not sure why it didn't reach 3 psi) 2. The boost gradually decline until about 4300rpm where there was no more boost (vacuum) after that. My initial thought was the (3psi) boost would be enough to reach until the redline but I was wrong. Since I checked my prior WOT run data, without the supercharger, I could only see less than 1 psi (-0.58) of vacuum at redline, but somehow with the SC, the vacuum increases to less than 2psi (-1.59) of vacuum. I think maybe to much bigger engine load? I have shown the result to the guy who made this supercharger. He told me, his supercharger was designed to fit a 1.6L or below engine. So he already expect this test result. He said, he already blew 2 engines with his previous version of the eSC (up to 0.3bar). Since most of the people unlike me does not do ECU tuning, he had to redesign his supercharge to fit more to the masses. He even invited to see a car (a VW GOLF 1.6L) where they had just finished the eSC installation last weekend. They've tested it and cut almost 3 seconds off the time of 0-100km run. I think that's pretty amazing! We had a great chat the other day! Even though, I had quite a hard time understanding his Chinese language and with my broken Chinese and of course with the help of my phone eng-chi dictionary, we seems to understand each other well. This guy really is into SC as he knows what he's talking about, he even showed me some brochures he had collected attending exhibitions/seminars. We talked about Valeo eSC, he said it was due to come out soon but will only be available in 24V. He said, if I'm not worry of blowing up an engine, he offered me to test a 36V eSC of his that is due to come out maybe in 3 months. I said, yes of course! Let just wait and see how it goes. Overall, I'm quite happy with the SC, it gave me that extra punch when I needed more power. If I liked my previous SC before, I would give this SC even more thumbs up! I would say, this is probably 10 times better. This would give you that instant boost and power that can actually feel when it kicks in. I have tested using the boost gauge, the SC can maintain boost of 3psi and can last more than 12 seconds. This is the longest so far that I've tried, there was too much traffic here to maintain my foot on the pedal. But the guy told me, it should be able to last for about a minute, then it will shut off as designed to protect the SC motor. Tried to take a video the other day, but it seems like my dash cam was not clear enough to see the numbers in a boost gauge, wanted to show how the SC reacts every time when I step on the gas pedal hard. Need a better dash cam Next up, if I have time, I will test 0-100km run w/and w/o SC. Probably test using paddle shifter and auto. But I think auto would be more accurate because of the same shifting point. I will also request the guy to take a video of the off the car and spinning SC. You should be able to see how powerful this SC is.
  6. It looks like my testing of SC won't be commencing until after a few more days or until the snow had stop here. We had been experiencing terrible snow storm (at least 8 inches thick of snow yesterday) started since last Saturday. I thought it will stopped today but it started snowing again. It was definitely much colder today and forecast will be even colder tomorrow. So no more testing for now.
  7. It looks like no need, the problem didnt happen again after I've changed to a new battery. It seems like my old battery was shot. There 's some evidence of leak that Ive discovered in the battery terminal after removing the old battery. Ive used the battery for almost 80k km. The inventor of ths SC was right, he recommended me to change than install a voltage stabilizer which he said was a waste of money.
  8. It has been raining/snowing these last two days. Hence was not able to do a 2nd gear WOT run yet, it seems like I'm getting rid of all the knocking when boosted finally and almost ready for the run. But the forecast will snowing in the next two days. I have already ordered a new Optima car battery and it will be delivered and installed later today to replace my 3-4yrs old battery. Let's see how it will affect the performance of the SC. So far, every time my SC kicks in, it will sometimes reboot my aftermarket TPMS monitoring gauge. It seems like my power flow was not stable due to my old battery or simply the SC just power hungry. Maybe a power stabilizer might help. Having the SC for the last 5 days have been a great feeling for the car in terms of performance, so far so good. It was probably 10 times or more better than my old SC. The good thing about this SC is you can get multiple boost to happen. You step on the gas pedal hard, you will get 4psi boost, you release the pedal for a few seconds, and step on the gas pedal hard again, you can get another 3-4psi boost again. I just absolute love it so far. The car just feel so light when the car is boosted.
  9. More observations: I have installed my digital boost gauge, which has a hose connected directly to the supercharger. This morning on my way to work, I had a chance to test it and the boost gauge is actually reporting up to 4 psi of boost. I forgot that there's always a vacuum in an NA engine and hence we could only see 3.3psi max boost in our data. With the gauge, I could immediately see how the SC reacts. When I step on the accelerator pedal hard that's the only time the SC will spin and it's amazing that this SC instantaneously hit max boost of 4psi in less than 1 second. As soon as you depress the gas pedal, the SC will stop. When you are just cruising by stepping on the gas pedal slowly, the SC won't start. So it means we could enable the SC all the time without problem. It's amazing that this SC system can detect and distinguish this, when we need to accelerate hard, the SC starts while when just cruising, SC will not be use or won't start. In contrast, my old SC starts as soon as it reaches your specified RPM. If you are above that RPM, the SC always spin no matter what even you depress the gas pedal. I will try to take video when I have time.
  10. Fredric, I will do that when I complete my tuning of the timing. So far, I find my engine load have increase when boosted. So I might also need to extend all ECU maps with engine load beyond 1.5. I'm hitting 1.48 even in low rpm.
  11. Some observations: 1. The new e-SC can reach max boost/spinning instantly in less than 2 seconds from (-11) vacuum to max boost (3+psi) (based on the log) 2. My existing car battery seems could handle multiple times run but may need a better stable battery. Although I can feel my other accessories (screen) will dim/flicker a little bit when SC started or become active. Thinking of getting an AGM car battery to replace my 3+ year old battery. 3. The e-SC is really quiet, can't hear it spins but can feel the flicker/pull. 4. Compared to my old SC, this one rock, I could only see max of 0.87psi max before while this one instant boost up to 3+psi. 5. For slightly less money than what I've paid for the old SC. I think this one well worth it. 6.It is still too early to tell about reliability, but this one seems a better built than my other SC. I have reported my initial SC testing status to the seller/inventor, so far he was happy that I was ecstatic about the positive result of his SC. He said, he could easily built a much bigger spooling SC of up to 0.5 bar if I want him to.
  12. Yesterday, on my way back close to my home, I decided to try to enable the SC. As much as possible, I don't want to put too much stress on the engine, just want to try it in a higher gear for a few seconds. With my tactrix and SD logging active, I step on the gas pedal for a few seconds. I could definitely feel the pull when I step on the accelerator pedal. I tried a couple of times again and again. When I get home, immediately check the log, I was really happy that I could see the boost reached 3.3 psi. It seems my existing timing could handle the existing boost so far. I only have some minor knocking but it was ok I think. This morning while coasting in the highway and the CVT should be in the fourth or fifth gear, I've activated the SC again. But this time I wanted to see how long the car is boosted. I could definitely feel the pull and lots of power even when the car is running at 130kph. Not sure why using MAF scaling tool from Romraider, the boost starts from 2.9 psi, but the raw data is actually 3.03 max psi boost. Anyway, I was happy to see that this SC can provide boost for at least 10 seconds. It should be enough when doing the 2nd gear pull or 0-60mph run. Really happy with the test result so far. I will probably need to retard a little of the timing before doing the 2nd gear WOT pull. Will do this in the next few days.
  13. The installation for this SC took us almost 5-6 hours. It took two of them to install the thing. One handle the fabrication of the flatbed and the other install the SC. Because the SC was not light and with the enormous speed of the spinning blade (up to 80K), the guy does not recommend it to be just hanging and supported by just the silicon hose. It took them sometime to know where to place the SC and finally fabricate a flatbed for it. That way he said, it will be very quiet and will not vibrate too much when spinning and as it will move together with the engine. His place had everything that machine shop have, they can fabricate screws, wires etc. So almost everything with the exception of the SC are fabricated on that day. The installation effort was great and well thought of. The e-SC came with a remote control that you can turn-on when needed. With the SC enabled, it will began spinning as soon as you stepped on the gas hard and throttle plate opens. It does not came with other monitoring gadget like my other e-SC but I’ve bought a digital boost gauge and will install it later, anyway I have BTSSM to monitor the car performance status. After the installation was complete, it was already dark, we just tried to see if the SC can be turn-on and running. I was a little hesitant to turn-on the SC on my way back home, since I was worried to blow my engine due to the extra boost and also due to the status of my injector duty cycle. My IDC can reach 90% when doing 2nd gear WOT pull. So I told the guy that I will need to collect some data and activate the e-SC slowly and adjust the timing when needed.
  14. This is for benefit of those who had sent me PM asking me if I could continue to update this thread. Some good update to e-SC. As I've said before, I have been waiting for another version of an e-SC. Finally got to contact the seller and inventor of this e-SC, he was away for long time, because they are enhancing the old version of his supercharger. This is still was not available to the public, only 3 cars have this supercharger in China. He said he was happy to sell his supercharger since he can see my passion for cars. When I went to his place, he showed me a prototype of this supercharger, it was actually smaller than what I was expecting, it was small but when we tried to spin it, it was so powerful that I can feel it was maybe 5 times powerful than what I have now. He claim his supercharger can reach max speed and max boost of at least 0.2 bar ~ 3 psi in less than 1 sec. The guy was really good, he said he have been supplying an even bigger supercharger to a racing team in China. And his new e-SC was just his intention to make it available to the public. He said, they might mass produce and supply it the local OEM cars here, he said they have already tested in some cars here. I had a chanced to ride his small car with the SC - a VW Sagitar with 1.4 engine, we went for a ride, he showed me how the e-SC worked. I could really feel the pull in his car. He said, since the e-SC uses an enormous battery power, the boost will only last for a few seconds. Anyway I was thinking that was actually the intention of the SC, to get you up to speed immediately. Next up, I will talked about how we installed this thing in my car last weekend!
  15. I only have manifold relative pressure, we didn't collect absolute pressure.
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