wastegate post
As a wastegate is should be controllable via the same methods you see for TT setups i think.

It is not a WG. We control the BPV with a MAC solenoid via hijacking the EVAP purge valve signal going to the ECU which can then be controlled through Ecutek (map switching using your cruise control buttons) or by a standalone boost controller like the Innovate SCG-1.

If your going boosted the SCG-1 is really your best option as it displays Boost, AFR and allows you to dial in boost on the fly, in an all-in-one gauge.

https://www.topgunspeedworks.com/nis...wideband-gauge

It can't do boost by gear tho which is why people want to connect it to ecutek no?

EDIT: can you clarify how the "BPV" (bypass valve?) operates? does it have springs? does it have top side and bottom side air inlets etc...? (ie in what way does it not work like a wastegate?)

We did not do this so you can use boost by gear. We did this for its performance benefits. When you spin the blower faster then bleed off the boost after you hit your desired peak PSI then you move the entire power curve to the left. Meaning we will have way more HP and TQ lower in the rpm band at 14psi then anything on the market. It also allows us to offer a supercharger that can run a "daily" map at 14psi and then a "kill" map at 18psi. Or a daily of 12psi and a built motor with 20+ psi.

Otherwise you are always stuck to the PSI of the pulley you have on.

The BPV just opens when its told to so if you set that at 15 then it opens at 15 and dumps the excess charge air vs a WG dumps the excess exhaust.

I'm not sure i understand what the distinction is in practical use?
So if you can bleed off charged air pressure. and you can control this electronically.
Why can't it be used to limit boost pressure per gear? Does the valve not respond to control via the solenoid with the same speed that a wastegate would?

When you say that the kit's boost is controllable via solenoid that suggest to me anything that can control a solenoid (like ecutek boost by gear) could control it? So is that not the case? I understand you didn't design it for that. But shouldn't it still work?

I was hoping to buy this kit and do boost by gear. Controllable boost is a huge benefit over other supercharger setups. But maybe some more clarification on exactly how it would work would help potential buyers.

I was thinking the same thing... if it's being controlled by Ecutek to lower/raise boost, all other items that use that function should be enabled as well. However, this is probably a question that would be better answered by a tuner, no offense to TopgunZ.

I never said it can't. Basically, we never even thought of that. I guess we just like melting tires.

So, I guess the sound of this is logical. I also don't see why you couldn't do this.

Eugene or Sebs? Please confirm.

I talked with Eugene. He said boost by gear only works on the 370Z and it has to have rev matching.

To provide some clarification, boost by gear only works on vehicles where the gear is detected within the ecutek software. By definition, all synchrorev equipped models support boost by gear.

To further that, it would be 6MT only, since 7AT is only Downshift Rev Match. Unless that is still picked up by the ECU…

There is one specific rom that I am aware of where gear actually works on a 7at - but I haven’t personally seen it.

That'd be nice to enable boost by gear on the 7AT, reduce boost in 1st, 6th and 7th

guess i can't do boost by gear anyway, on my base model. sigh!

Anyone in the process of installing the kit?

Have had the kit sitting in the garage all week. In the process of installing a fuel return kit I now have permanent codes p0123 p0228.I can no longer switch through my maps as well. As soon as I can get this issue sorted out I will be installing it and posting up numbers .
I just want to make sure I have no ecu issues.

Still waiting for my kit to arrive (overseas shipping). Not even sure if it has been shipped out yet.

Super afraid of potential damage to the kit during transport. I'm never lucky on that account. Have had so much stuff damaged in the past when ordering component from abroad (mostly things like exhausts and intercoolers for previous car ownerships).

I just finished installing mine. Working on getting an appointment for a tune.

I have mine installed on a 7AT. Just finished and working on tuning.

Do keep us posted, please. Next year is my make / break for whether I pursue the VR 7AT swap, or stay stock with upgraded flex plate. Good luck!

My kit is fully installed, and began tuning with Eugene. Big shoutout to Eugene for helping us out in the late hours to get the first tune running. There is some more content on my ig, here are some clips of the Rotrex kit.

https://www.instagram.com/p/CTJx9pPn...dium=copy_link


Sent from my iPhone using Tapatalk

So, how does it feel? Anything else pending like oil cooler?
What exhaust configuration do you have (any headers?)?

You get yours going? I’m 90% complete with install on mine also on 7AT.

I hit 464 whp and 406 torque on pump at 9.5 psi
535 whp/463 torque on e60 and 9.5 psi
692 who/533 torque on e60 and 15 psi
Graph if off a bit because my intake pipe blew off and I was in a rush to pick up my son from school but will be going back in a couple of weeks as my tuner is going on vacation and I want to run on full e85. Slight misfire up too still had the oem spark plugs

Whooop! For the first guy to throw out some numbers, finally guys can see how efficient this Rotrex blower is. These are all SC records, especially with a filter on. Plus you havent even taken it to its potential. Full E85 will get you more power, it made peak power right before the coupler blew off, meaning there was some left on the table, and this was SAE!

What will a built block and 20psi look like?

Can you do me a favor and email me the graph in STD? topgunspeedworks@gmail.com

Nice build!

Wow it's absolutely impressive, awesome G37 right there.
It's a torque monster as well. It blows my mind thinking about all it's potential right here on this kit.

Woah….. has me reevaluating my turbo setup choice…… Any chance you got some vids you could post? You know we gotta hear that spooly boi noises and pshhhhhhhhhhhhhhhhhhhhh

Im working on it. There are some things in play that will highlight the kit with media. I am just waiting.

Think built motor, huge shop, professional photography. Should be ready in a couple of weeks.

I did get feedback that the Rotrex's spool sounds unbelievable. Just a lot of guys are still in the remote tuning process with even more guys in the install process and a lot of guys waiting for kits. I have shipped 8 kits this week alone.

@TopgunZ
Looking at those dyno graphs, running 9.5psi hitting peak 400wtq around 5500rpm but falling off to about 320wtq redline, for those of us on stock AT / stock block wanting to limit peak torque to under 400wtq but flatline / hold onto that torque till redline to still have a good 500+whp top end.

Can the mac solenoid / ecutek do boost by rpm?

Or are there / will there be different pulley options for limiting low/mid range boost but having some top end still?

Yes, we are doing this using the built in ecutek boost control.

Fixed it for you.

Awesome kit, how would you say the car feels compared to stock? Does it feel more torquey in the low to mid range RPMs?

Anyone got this kit on a m/t running 91/93 no fuel return? Hoping for a spring order/pick up(road trip), super curious about number for above set up.


Sent from my iPhone using Tapatalk

Sounds good!

And gone is the flutter of the previous version! Greats stuff!

I have the previous kit and managed to completely get rid of the flutter sound, with this I mean, completely. No traces of it at all; and with Aaron's silencer in use as well to quiet down the "Pshhhht" sound.
I'm happy with it, but no doubt this new kit is way better.

Looking at the graphs, any insight as to why the blue and green torque curves start dropping after the HP cross while the red just keeps climbing?

Do you happen to have a plot for boost pressure?


Sent from my iPhone using Tapatalk

The corresponding red torque curve would have also leveled then dropped off had the run continued. As you can imagine when viewing that graph: that particular run was stopped short at approximately 7K RPM where it the torque started to drop (the previous "blue" and "green" runs continued until ~7.4K RPM (looking at the graph, his intake popped off at ~6.7K RPM).

Well the red torque curve would had eventually dropped as stated by Northstyle. If you have more dyno questions let me know as I want to make a vid at the dyno and can asked the tuner some questions .If it's ok with Aaron I can post the link here to show the hp #s on the S/C as they are coming out.

Hell yeah man. Anyone buying a kit is free to post whatever they want. I've always been the kind of shop that isn't afraid to show whats actually happening. The more truth and data the better.

Anyone running the kit that has piped the intercooler blowoff out of the area between the intercooler and radiator? I’m looking at doing this since I’m thinking the extra heat coming from the blowoff is heating up oil temps a little. Worth a try I guess, these parts are cheap.