600+ Rear Wheel SOHO A2A 370Z On Pump!

turtle64b

A few of us are working on that piece haha!

Nik@SOHO

Not sure if I should be flattered or scared with you checking on how many times I logged on today

My apologies as we have a number of clients to attend to during the day and do not have a lot of free time to post on the forums...

In regards to your statement above about the supercharger being overspun

The boost pulley that we are using is 80mm and the pulleys behind the head unit are 82mm ( my apologies if I assumed that you had the same setup on your kit)

The calculator that a lot of people use from vortech still has a lot of things that are not taken into account, so there is some margin of error.

Even still based on the pulleys used, we would "technically" be overspinning it based off of the calculation below however it is a very marginal amount:



Based on the other calculator that vortech offers this is what you get:



If you look at the graph for the 600 hp, our client makes peak power around 7500 rpm and then the power tends to taper off ever so slightly, it is not like this client is holding the supercharger at 7500+ rpm over an extended period of time.

We have a number of clients that run this setup and have not had any issues that resulted in a failed supercharger head unit or engine.

Thermal dynamics and efficiency have a lot of to do in our kit as to why we are able to make power. I even have a client here that switched from the intercooler that you supply in your air to air kit and went to ours and picked up a good amount of power running the Sci blower head unit.



This client is an automatic G37 sedan running the 9 psi pulley and turbo guard setup on E85.

I appreciate your attention to every aspect of our kit and for all the questions that you have asked, hopefully we have answered them for you and have been able to help make the Nissan community a more informed group

TopgunZ

That was a nice attempt to stray from the actual question with a bunch of graphs that mean nothing. BTW...you didn't place the correct pulleys in the correct spot in the calculator.

Your customer measured and has a completely different pulley setup. You didn't address this at all.

You also never addressed why you recommend a 8psi pulley without a filter vs a 9psi with one. Is this seriously what your customer wanted?

And it looks like my kit actually outperformed yours until 5k where you can add 1 degree of timing to this tune and make more power up top.

But thats my old, predated kit anyway... not interested in what that can do anymore.

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

Nik@SOHO

The pulley and head unit number question was answered, my fault on not answering the other question..

The pulley sizes are directly from Dean at Stillen and Vortech, so not sure where you are saying that I "gave the wrong information" those values that our client gave you were with a ruler or tape measure to measure a pulley and is not exact.

The client was presented with a filter option and a turbo gaurd option upon ordering the kit as with any client that orders an air to air kit with us. We told him that without a filter you would see more boost and the client was aware of this.

In regards to 9 psi and the filter, we have seen boost levels above 14 psi (depending on exhaust setup) with that setup and we informed him that with the 8 psi we would see around 12 to 13 which was what we stated would be the max on pump gas.

We have not seen any issues or data showing where a supercharger unit was damaged by using the turbo guard, however we may be wrong, if so I would love to see some data showcasing this if you have any...

Not sure as to why all of sudden you decided to come in this post and "attack" us either way best of luck on the new kit

TopgunZ

When he measured so incorrectly he couldn't possibly had that switched around and told me the SC is a 3.5 and the JS was the 3.0.... guess that is just by coincidence he measured them to be what makes sense where the larger measurement came from the JS and the smaller from the SC. You really think he is a full half inch off from one pulley to the next when they are right beside each other?

You believe we should run filters on our cars to protect the supercharger?? Good grief. I suppose Nissan and all other car mfgrs put them on to protect the throttle bodies or something.

By attacking, you mean asking you questions that have arisen due to information I received? Ok. Maybe it has something to do with the fact when you released a copy of my kit (oh different intercooler) that you threw out numbers stating you make 85 more whp than my kit. Yet you completely left out the fact you dynoed without a filter. That was just deceptive and you absolutely know it. Why would I expect anything less from you now?

Anyways, I'll let the forum decide what they choose to believe here.

__________________
ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

TopgunZ

So let me get this straight. You post this above...then post this graph below comparing my intercooler to yours which has the EXACT same amount of boost. Yet you state yours has so much less restriction and have done extensive research.

Also, tell me exactly how your charge piping is bigger? You clearly state its 2.75" on your website. Everyone knows mine is.

And out of curiousity, It appears he went from your kit to mine. The time stamp on your dyno states Nov. 1st 2019 for the SOHO kit and states Dec. 23rd 2019 for the TopgunZ.

__________________
ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

cupcakez

@Nik-Soho...

Hold up... Something doesn't add up here to me.
Now I'm not the smartest person when it comes to taking care of my own supercharged vehicle but I can at least see something that doesn't add up (in terms of numbers!!!) -- maybe because I'm asian? XD Just kidding, terrible asian joke on myself, I know!

But anyways...getting to the point:

You stated your boost pulley that we are using is 80mm which is equivalent to 3.15 inches when rounded up to the nearest whole number, correct?
And then you also stated that the "pulleyS behind the head unit are 82mm" which is equivalent to ~3.23 inches when rounded up to the nearest whole number. This is pretty much the stock pulleys that the stillen kit comes with on the Supercharger pulley side of things (it comes with two stock 3.2" pulleys both on the direct SC pulley and the jackshaft SC pulley.




Then you state that the calculator from Vortech people are using have things that are not taken into account so there is margin of error, but let's ignore that for now since it applies to everyone equally!

Then... you state that you are still "technically" overspinning the blower based off the calculation *BELOW* and even then, you claim for itt ostill be a very small amount of overspin



Based on what you stated above and what you inputted in this calculator, things don't add up. Either you accidentally made a mistake and put the numbers in the wrong slots or you intentionally did so, hoping nobody would notice so you could show everyone else that you are only /overspinning/ the blower by a little bit? Not sure.

Either way, the numbers are inputted incorrectly therefore this image cannot be used to prove anything!
The way it's inputted in the image above is that you are saying that your 8psi pulley is 3.23" large, and the SC sided jackshaft pulley (directly on the other side of the serpentine boost pulley) is 3.23" and that your supercharger direct pulley is 3.15 inches which means you had to have swapped out the stock 3.2" pulley for a slightly smaller pulley and put it directly behind the SC head unit (SC Direct pulley slot). But then above, you claim that your boost pulley is 80mm (which I would assume is the 8psi pulley) since you stated, by process of elimination, the "pulleyS behind the head unit: (which I would assume is two pulleys since you put an S at the end of pulley) are both 82mm (aka 3.23 inches). So whether you made a typo on accident or on purpose with the intention and hopes that nobody would catch it? Well... should be fixed for proper facts and things should add up. I kind of expect more from such a large company as yourself since you have a huge reputation on the line.


Last but not least, the image below is color coded to the above images so EVERYONE can understand which pulley is which in how you referenced them vs how it should be.



Circled Red Pulley = Jackshaft Serpentine Side -- aka, Boost Pulley as you call it

Rectangular Yellow Pulley = SC Jackshaft Side Pulley -- aka, ONE of the 3.23" pulleys you announced earlier in your posts.

Curved Boxed Blue Pulley = SC Direct Pulley -- aka, the OTHER 82mm pulley you claim to be on the car which doesn't match with the numbers you put in the calculator since you entered 3.15" for the SC direct pulley but claim that the pulley behind the head unit is 82mm??? Could you please clarify which is which for us so we can understand?

You can't claim one thing and show another! That will confuse people xD

Anyways, I hope you will able to straighten out these spaghetti numbers and make more sense of things for people to see when you want to showcase something cool!

Peace out for now~~ \o/

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|| ECUTEK (Eugene) || A2A || IPP Built Motor Stage IV Spec || RJM Short Block || Quaife LSD || KW V3 || Stillen-Exhaust || 11.0.1 CR || 928 Full Rebuild || CPZ 34 Row Oil Cooler ||

Nik@SOHO

We run a 3" charge pipe coming off of the supercharger and then a 2.75" for the y section to the throttle bodies

The notes were added on December 23rd to state that it was your kit as there was no information on that run.

I have nothing to hide or make up as I do not gain anything by doing so sir

Nik@SOHO

You are correct and it was not done intentionally, they are the stock pulleys that come with the stillen kit and the "8 psi" pulley that stillen calls which is the 80mm pulley.



When the correct numbers are inputted into the calculator nothing will change, however this is to correct the post from above

cupcakez

@Nik-Soho...

Thank you for correcting your numbers, I appreciate that!!

How the heck you got to 7900 RPM though? xD The highest I've seen on my car according to Ecutek APP was like 7625 or something like that!

__________________
|| ECUTEK (Eugene) || A2A || IPP Built Motor Stage IV Spec || RJM Short Block || Quaife LSD || KW V3 || Stillen-Exhaust || 11.0.1 CR || 928 Full Rebuild || CPZ 34 Row Oil Cooler ||

HapaZ

Some tuners will spin ‘er up to 8k.

TopgunZ

I see you avoided the intercooler discussion. Well, we proved your repeated statements of yours being less restrictive as false, so I can see why.

But the piping...So our post intercooler sides are identical just leaving the short pipe from the supercharger to the intercooler, all 2 feet of it. Yours is 3", mine is 2.75". Yet the volute of the supercharger output is only 2.75". You have mentioned Thermal Dynamics so you must know how Fluid Dynamics work. Your bottleneck is your narrowest point.

I know you think I'm attacking your kit, really im just defending mine with actual facts instead of promoting it with fiction.

__________________
ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

cupcakez

@Nik-Soho:

Another question Could I ask if there are any negative repercussions to raising the rev limit through the tune for our cars assuming the oil pump is stock?
Or is it safe to do no worries?

Thanks for your reply in advance!
I was thinking maybe I should do it too if there is no negative repercussions.

But if there are, would you be able to let me know what those are?

Appreciate you responding!!

__________________
|| ECUTEK (Eugene) || A2A || IPP Built Motor Stage IV Spec || RJM Short Block || Quaife LSD || KW V3 || Stillen-Exhaust || 11.0.1 CR || 928 Full Rebuild || CPZ 34 Row Oil Cooler ||

Spooler

LOL, I suggest you stay away from things that might make you go boom.

cupcakez

__________________
|| ECUTEK (Eugene) || A2A || IPP Built Motor Stage IV Spec || RJM Short Block || Quaife LSD || KW V3 || Stillen-Exhaust || 11.0.1 CR || 928 Full Rebuild || CPZ 34 Row Oil Cooler ||