BEGi S2 System - Questions - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to   Members

Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market TrackSpeed

LinkBack Thread Tools
Old 09-07-2010, 11:43 AM   #1
Junior Member
Thread Starter
iTrader: (4)
Join Date: Sep 2010
Location: Australia
Posts: 163
Total Cats: 10
Default BEGi S2 System - Questions

Hi guys, thanks for an awesome forum.

Done lots of reading and searching but hope you guys might be able to fill in the gaps for me.

I have a 94 NA8 which is currently stock except for FM stage 2 suspension and a 2.5 inch cat-back. It has around 70K miles. Car is a daily driver, 70 miles per day on the freeway and the occasional traffic jam, and weekend runs up the local twistys - maybe the odd track day.

I am currently tossing up between an MP62 blower or a turbo kit, probably a BEGi S2 Shanghai. I am leaning toward the turbo because it obviously has much better potential for increased power in the future.

My question is this: for the best easy PnP results, which options on the kit should I choose? Smooth power delivery is preferred over top end numbers but I am still hoping for 220hp atw minimum if I go turbo. I have a lot of experience working on cars but TBH not much with FI and basically none with aftermarket ECUs. With this in mind, I was thinking:

1. S2 Shanghai system with T25/28 hybrid;
2. IC#2 option;
3. Megasquirt w/ IAT sensor kit

...and then add 440cc injectors, wideband, and stage 1 clutch. Any other parts i'll need? It doesn't look like the kit comes with a fuel pump...

Does this sound feasible? Is the Megasquirt a challenge to tune on a kit like this, and does it come with baseline maps for an application like mine? Any thoughts on other options?

Cheers guys!

Last edited by zossy1; 09-07-2010 at 11:57 AM.
zossy1 is offline   Reply With Quote
Old 09-07-2010, 08:28 PM   #2
Junior Member
Join Date: Aug 2007
Location: Burlington, VT
Posts: 418
Total Cats: 0

It does sound solid.

Turbo over SC seems like a no-brainer to me.

Good luck with your build!
jbresee is offline   Reply With Quote
Old 09-07-2010, 08:36 PM   #3
iTrader: (76)
18psi's Avatar
Join Date: Apr 2008
Posts: 32,884
Total Cats: 1,945

18psi is offline   Reply With Quote
Old 09-08-2010, 01:11 PM   #4
Supporting Vendor
Join Date: Jun 2006
Location: BEGi / Bell Engineering
Posts: 1,322
Total Cats: -35

The parts you have picked out are an excellent place to start. The MS on a 1994 is a no brainer. It is the most economical and powerful solution for the NA Miatas. For you power goals and the use of the car, Intercooler # 1 will probably be sufficient. I would upgrade to IC # 2 if you know you plan to upgrade power in the future, or you do more than a "once in a blue moon" auto cross. Injectors, Wideband, and clutch are all a good idea too. You might find that you need a better fuel pump, and you might not. We are finding that almost all 1.6L NAs need the fuel pump replaced. The 1.8L NAs are still hit and miss as to whether or not it is necessary from the get go. But, the need for a fuel pump will not be obvious until you are tuning or on the dyno. You can head off a potential problem by putting in a Walbro though.

The MS comes with base maps loaded. They are the best place to start. You can log and tune and tune in real time. It is not a challenge, just a lot of bases to cover. As Tim always tells me, "read the manual".
Hope that helps,
Stephanie Turner is offline   Reply With Quote
Old 09-08-2010, 04:17 PM   #5
Junior Member
Thread Starter
iTrader: (4)
Join Date: Sep 2010
Location: Australia
Posts: 163
Total Cats: 10

Thanks Stephanie! This is super helpful.
zossy1 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 52 08-28-2016 04:18 AM
Complete BEGI S3 NB Kit, Full Enthuza 3" Exhaust, ACT HD Clutch, MS2 PNP, Wideband kronikker Miata parts for sale/trade 17 10-06-2015 10:18 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 11:04 AM
The "other" spool question stefanst DIY Turbo Discussion 44 09-28-2015 07:16 PM
Built 1.6l Engine, 1,820 miles Baxgordum Miata parts for sale/trade 19 09-04-2015 11:42 PM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 09:56 AM.