Esmeril Turbo vs Petit S/C
 

Hey everyone, I'm still fairly new here and just had a few general questions regarding turbo vs s/c.

I am considering to use FI on my car finally, but cannot decide whether I should buy the Esmeril Turbo Kit or the Petit Stage 2 CS Supercharger Kit. The Esmeril claims 415WPH running at 16psi, and the S/C kit claims 300WHP at 5-8psi.

I was just wondering:
Which kit would you recommend?
Which one is best for the dollar?
Which is most reliable / won't screw up my engine as fast?
Is it possible to make the SC put out more than 300WHP?

I am looking for a great impact on acceleration and speed in general (Especially on low end). As of now I am aiming towards the SC, but just wanted some imput.. . . . Thanks a lot everyone!

Have you done a search and looked into the two options. looked into problems other people have ran into and other related information. if not i suggest you use the search button and begain reading as most of have done.

Yeah I have. I know the SC will give me the low end power I want as well as a good amount of power through the entire power band, where as the turbo will lag and power band will be midrange. I had a turbo'd 200sx and liked it, especially the sound of it. SC sounds are kinda gay, but Im assuming they are better overall...just looking for some opinions

if you think the sound of SC is "kinda gay" then why is it even on your list?

your comment about lag and power band shows you have a lot more reading to go

That's a uneducated comment to a point. A improperly sized turbo will lag or run out of puff.
however then there are those that don't care about lag and power delivery across the rpm band. They just want to be dyno queens.

Its still on my list because of its reliability. And of course I have "more reading" to go. Thats why I posted this thread in the first place. Thought some people might actually have some suggestions / opinions on sc or turbo. Thats what I was aiming for.

We all do and they are out there, but in the end its your car you do what you want.

Oh and by lag I was meaning the time it takes initially to spool up. And by power band I meant how it delivers across only mid/higher rpm's...this is what I have read / know. Sorry if I'm not using correct terms, I just use what makes sense to me.

And yeah I know its up to me, but I wanted to know what everyone thinks of the two that own. Like what is the reliability of the sc....will there be a substantial notice of the power increase, etc...

I'm pretty new here and just started learning about rotarys not long ago..

If I was going to choose between the two I would go with the SC. Just my opinion. As others have mentioned do your research these comparisons have been covered on other threads.

Thanks for the opinion though, basically all I was looking for is advice on each. So yeah your opinion is appreciated!:Peace:

The power band of a turbo kit depends mostly on your turbine choice. The Esmeril kit apparently makes a lot of high end power but has got a sub optimal power curve because of the turbo sizes offered.
A supercharger is rpm-related so the power curve is what it is but it is inappropriate to state that a supercharger will make more low-end power than a turbo (of the proper size, ndr).

How much power do you need for cruising? what's your rpm range when driving spiritedly or at the track? Those are 2 things that you should consider, in my opinion.
With that said i would pick the pettit s\c if the only other choice is the esmeril kit because of the easy tuning solutions that apply to that kit (read AP\MazdaManiac) whether the esmeril kit is non-maf friendly and would need an interceptor or standalone ecu to work properly. The int-x is a piece of crap so...
I would consider a turbo kit with a properly sized turbo and well designed intake section over any s\c though considering the power band i need.

You should state your priorities like car use and power goals before limiting yourself to just 2 options :)

If you want low end power, you shouldn't be considering the SC. Just look at any dyno chart, including a greddy turbo kit at 9 psi. They make quite a bit more torque, and that includes the low end.

Also, don't look at "SC @ 9 psi" vs "TC @ 10 psi" type stuff. The PSI is meaningless. It's like saying my diesel car is at 2000 rpm in 6th gear, while your rotary car is 4000 rpm in 6th gear. Just because it's 6th gear doesn't mean the rpm is directly comparable. Is my 2000 rpm better or worse than your 4000 rpm? Will one cause more engine wear? None of that matters. Now, if it's my diesel vs your diesel, or a turbo kit vs another of the same, then you can compare.

Ok, so just a question then: It is, in terms, "safe" to put a smaller belt on the supercharger, therefore running it faster off the pulley system?
Initially my thought was the Greddy turbo, but then I saw a sc and became interested. Only thing is that, from what I know, a sc is more reliable than a tc.

As for my driving, I live in the city now, so do most of my driving in the city, usually cracking it every once in a while. I do highway driving to my farm as well. As for track, I only make it out so often so thats not a huge concern. Basically I want a good "kick" of power to boost my acceleration right up.

Thanks for everything guys!

A supercharger is not more reliable when compared to a turbo, it may be easier to install\set-up\tune\run for an inexperienced owner but that's not a true statement per se.
For your use the pettit supercharger seems like a good choice btw but keep in mind that even it it's not a truly bolt-on and that their base "tune" is just a starting point.
I also wouldn't mind thinking about smaller pulleys or other ways to increase the power since the increase offered by the kit as it is sold may be more than enough for you. Modifying it may become a headache like any further modification that leads to the need of many other support mods to keep it running properly.

SC has more moving parts, and has parasitic loss. Even the install time is similar, though you don't have to mess with the exhaust.

I think the biggest problem here are the typical misconceptions:

- Supercharges make more torque. False.
- Supercharges make more power down low. False.
- Superchargers are safer. False.
- Superchargers are easier to tune. False.

The only thing true, is that a supercharger is a lot more difficult to modify (adjust boost). And that can potentially save a noob from making random adjustments to the system. On the other hand, it's pretty damn easy to not increase boost in your boost controller. So it only saves you if you are a complete moron.

Well I'm not a moron on the topic by any means... I have only learned from experience as well as reading. The Greddy turbo kit is looking pretty good right about now. . . does anyone have a Greddy turbo kit installed?

This thread needs more cowbell....

Surely You jest ?


The Greddy kit is the most popular kit . I have the Greddy and can tell you that if you do your homework and do all the recommended upgrades that you can achieve an awesome result .
My particular setup is notable because it has produced the widest proven powerband of any private members kit on this site . :smoker: Little dig at Kane .... heh
I can also tell you it is an absolute joy to drive .

Getting to that stage is no simple 'bolt it on and fire it up' job however .

Im neither condoning nor negating either kit specifically listed, but based on everything I've seen to date a properly designed turbo setup is undoubtedly the best possible solution for a Renesis application.



.

Big part of the problem is that people cut corners or try to go FI on the cheap.

There is nothing worse than trying to go FI on a budget. Buying a used greddy kit for $1500 and slapping it on with an emanage = fail.

^^^ Please post this in the other thread that was started today with the newb trying to go FI on a very limited budget.

Agreed! Now if you want a nice setup go here;

http://www.turblown.net/store/

Money is of no concern

Is this a stable kit?