Full throttle Electric Supercharger Build Thread

[fenton]

Originally Posted by BRZmeMR2

This is just getting better and better :o question though is this experimental compressor going to be alot more expensive?

Exp stands for expensive duh


No I'm kidding I don't know. I know the parts are more expensive. TBA as this is the first ever made.

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[MikeW]

The conventional FI system will resound on various throttle levels, which makes for a predictable and comfortable transition between boost levels and acceleration. Can one of the testers give some insight as to how it feels between the on/off points associated with the ESC? My understanding is that there is no middle ground, which must have some impact on the driving experience.

[rusty959]

Originally Posted by MikeW

The conventional FI system will resound on various throttle levels, which makes for a predictable and comfortable transition between boost levels and acceleration. Can one of the testers give some insight as to how it feels between the on/off points associated with the ESC? My understanding is that there is no middle ground, which must have some impact on the driving experience.

Multiple testers have given multiple insights already. I understand its a long thread but just asking the same questions over and over makes it even worse.

Just search through the posts of people you know are using it, you will find what you are looking for.

[MikeW]

rusty, I read the entire thread but it appears to me all the discussion has been about stomping on the peddle and how that feels. I'm talking about the middle ground. Maybe they have intended to address this point, but I didn't read it that way.

Just search through the posts of people you know using it, you will see what I mean.

[MikeW]

Example: There is a car to your left and a truck in front. You are in third running a steady 3800 rpm, you see a gap and open highway ahead of truck. You get that feeling and ease into the peddle to pass the car to your left at just the right acceleration to not freak them out or be smacked by the 18 wheeler doing something strange because they may not see you. As you start passing the truck now to your right its open highway and you want to goose it up to 7000 and then bring it back to avoid a ticket.

I'm curious what this would be like and how the experience would compare to NA or conventional FI.

[mid_life_crisis]

Originally Posted by MikeW

rusty, I read the entire thread but it appears to me all the discussion has been about stomping on the pedal and how that feels. I'm talking about the middle ground. Maybe they have intended to address this point, but I didn't read it that way.

Just search through the posts of people you know using it, you will see what I mean.

If you really read all of it you would know that there is no "middle ground". The system activates when you put your foot to the floor. This has been made abundantly clear.
Apparently the latest test version might have a little middle ground with the aggressive drag reduction system, but only one person has that and he just got it.

[Gary in NJ]

There is no middle ground. There is a zone of operation that you quickly learn to pass through. That is the 30 to 60% range I referenced above. There really is no need to dwell in that throttle range if you want power, because with just a slight addition of throttle you are on full boost.

Speaking of which, the on-boost transition is just flat out perfect (this is coming from someone who's other DD is an A4). Boost builds in a 250-500ms range. There is no waiting, It ramps quickly is 100% predictable.

[fenton]

Originally Posted by MikeW

Example: There is a car to your left and a truck in front. You are in third running a steady 3800 rpm, you see a gap and open highway ahead of truck. You get that feeling and ease into the peddle to pass the car to your left at just the right acceleration to not freak them out or be smacked by the 18 wheeler doing something strange because they may not see you. As you start passing the truck now to your right its open highway and you want to goose it up to 7000 and then bring it back to avoid a ticket.

I'm curious what this would be like and how the experience would compare to NA or conventional FI.

I can answer this. Running steady in any gear you still have your NA power so accelerate as you would normally, when you want to goose it to get passed, the transition is seamless once engaged, just as it is in a turbo or sc powered car. Turbo cars usually only run full boost above 70% throttle as well so you have that same middle spot where you are either out of boost and NA or really moving.

With the aggressive DR i find it really pushes you forward on throttle tip in, i almost thought WOT engaged one time but it didn't.

This system i have now really reminds me of my 2011 sti without the lag. You sit there at 4000 or so and when you ask for passing power(>70% throttle) you get a nice surge of torque.

[MikeW]

Originally Posted by mid_life_crisis

If you really read all of it you would know that there is no "middle ground". The system activates when you put your foot to the floor. This has been made abundantly clear.
Apparently the latest test version might have a little middle ground with the aggressive drag reduction system, but only one person has that and he just got it.

Wow, I thought I was abundantly clear that I understood the system was on/off and that there was no middle ground in ESC performance. I apologize for being vague.

My question was when you are operating the vehicle in the middle ground how that experience feels. I think I am hearing that it is very smooth in all cases, so in my example when you mashed the peddle at around 5000 or so the transition would be very smooth up to 7000? I will stop asking questions if they are causing discomfort, I'm just really interested in this system.

[MikeW]

Originally Posted by fenton

I can answer this. Running steady in any gear you still have your NA power so accelerate as you would normally, when you want to goose it to get passed, the transition is seamless once engaged, just as it is in a turbo or sc powered car. Turbo cars usually only run full boost above 70% throttle as well so you have that same middle spot where you are either out of boost and NA or really moving.

With the aggressive DR i find it really pushes you forward on throttle tip in, i almost thought WOT engaged one time but it didn't.

This system i have now really reminds me of my 2011 sti without the lag. You sit there at 4000 or so and when you ask for passing power(>70% throttle) you get a nice surge of torque.

Fantastic answer! Thanks, and BTW, you are about as professional as they come at this and I appreciate your patience and effort. It's not easy answering questions from the masses with grace, and you my friend have it down. If this system makes it to market I hope you are involved further, you deserve to be.

[MikeW]

One thing, with my WRX I always get the kick in that 3500 to 4000 range. At a steady 5000 when I mash it the response is very smooth and not jerky. I'm not saying jerky is bad, it can be fun at times. I think this brings up another benefit of other mods that remove restrictions in combination with the ESC. You will benefit from the added power of the other mods if you are just hanging out in the 4k to 5k area, where otherwise you would only be getting the stock NA hp. In my example, this also becomes important because stock might not give you a safe acceleration to shoot the gap before you decide to stomp on it.

[fenton]

Originally Posted by MikeW

One thing, with my WRX I always get the kick in that 3500 to 4000 range. At a steady 5000 when I mash it the response is very smooth and not jerky.

I get what you mean as i had both a WRX and STI before my FRS. At 5000RPM the response is VERY smooth because at that point the TQ is tailing off, Just as it is in your WRX or STI.

Where this system really puts you back in your seat is at 2500 to 4000(peak tq gains at 4000rpm).

My absolute favorite part about this system is the fantastic performance it gives right at 4000 to 4500 where it was completely dead before. After driving a WRX and a STI for 2 years each this was the SWEET spot for passing and accelerating and when i did it in my FRS stock it was flat on its face in the TQ dip.

Im going to go out and take a video to see if i can show the smoothness of the new system, I also have my HTC one up and running with all the Torque ODB goodies so for those people that still think it only boosts in one gear just stay tuned

[Gary in NJ]

Originally Posted by MikeW

My question was when you are operating the vehicle in the middle ground how that experience feels. I think I am hearing that it is very smooth in all cases, so in my example when you mashed the peddle at around 5000 or so the transition would be very smooth up to 7000?

There are two reasons to be in the 30-60% throttle position (it's not a middle ground, so lets drop that term). One, you need more power then a typical cruise throttle setting will provide, such as a hill climb. You don't need/want boosted power but you do need s'more. In this case you'll be in that second third of throttle travel. The second reason to be there is "just passing through" (visiting) on your way to boosted power. Keep in mind, we are only talking about 2-1/2 inches of total throttle travel, so to make your way through 3/4 inch of throttle (2-1/2 x .3) is not a chore. If you want boosted power, you quickly pickup a habit to pass through on the way to boost. If you are tentative with the throttle, searching for that exact moment of hearing the "click" of the switch, then it will feel like a long time.

I've updated post 2049 so this is clearer.

Originally Posted by MikeW

I will stop asking questions if they are causing discomfort, I'm just really interested in this system.

By all means, ask questions. Everyone learns something. There are over 2000 posts here, we shouldn't expect everyone to remember every word in every post.

[mid_life_crisis]

I really want to see what the aggressive drag reduction does to the torque dip with the primary system not activated. and yes I am fully aware I've basically been a pest asking for this. I don't care. Now that the DR is "aggressive" I want to see this dyno even more.
Unless it was done and I just can't find it in the wealth of information on the first page.