In tight 2nd gear corners, the tail end will step out quickly when the secondary turbo kicks in. It happens pretty frequently on most autocross courses: even with the drop to 8psi, you still gain a lot of power in a split-second, without changing throttle position.

-s-

 

All I have to say is Amen to Mazda. I am on the stock sequential system and I have no complains aslong as its working properly. I think the system truely optimizes the power in a streetable fashion. With the right driver behind the wheel I dont see many car's bossing a 7 around the pavement. In nearly stock form and simple air flow mod's exhuast, dp & intake the system is able to run high 12's. Too me thats a decent sports car.

PS. Doubt me ill bring the time slips

 

They only make 500crank hp, garbage

 

Help Me With A Cheap Non Sequential Setup!!!

Thx

 

ok.

 

http://www.rotaryresurrection.com/3r...ov_nonseq.html

 

hmm Sequential for me all the way. So no one has the Stage 3's in Sequential form? Everyone has them to run together? Looks like i'll be the first than. All i want is 400 to the wheels and it should be able to get me that. We'll just have to wait till it gets a bit warmer to see.

 

Have you even tried to fix your sequential setup? It honestly is not that hard. What makes it even easier is the simplified setup. If you run the simplified setup and actually remove the rats nest (if you dont have emissions) its actually a piece of cake. I just keep a copy of the simplified diagram in my glove box just in case. But it really is alot easier to deal with once you get rid of all the emissions crap. And once you pull the upper off a few times the only vac lines that you unplug thats part of the sequential setup are the ones that go to the two green solenoids. The rest stay intact. Just check your Solenoids to make sure theywork, replace those old worn check valves with some of Dales, which by the way are awesome, you should be good to go. oh and along with some Silicone hoses. I have not yet been in a twin that ran both turbos together but running them sequential feels so good. Im keeping mine sequential. Imagine that quick cool rush pushing about 400 HP! Not the worlds greatest, but enough for me on these streets.

 

non-seq are for those too lazy to fix the seq system

single conversion i can understand but not for me.

 

Most likely, that is not going to happen. The sequential system becomes a hindrance around 360-370rwhp. About the most we've seen so far in a 'working' sequential system was about 380rwhp.

 

I'm surprised even 380rwhp is practical... the stock FD turbos are just too small to flow enough air for any more than that. You probably had to use '99+ J-spec turbos to get even that much.

What they SHOULD have done is a non turbo 20B... lighter, better MPG, super reliable, more torque, just as much HP, and probably about the same price, since no turbos. Only downside is not quite as easy to mod but I doubt this would have a meaningful impact on their sales since anyone that can afford a $40K 2-seater new either can afford a turbo kit or just doesn't want to do mods.

 

[QUOTE= What they SHOULD have done is a non turbo 20B... lighter, better MPG, super reliable, more torque, just as much HP, and probably about the same price, since no turbos. Only downside is not quite as easy to mod but I doubt this would have a meaningful impact on their sales since anyone that can afford a $40K 2-seater new either can afford a turbo kit or just doesn't want to do mods.[/QUOTE] I'm with him

Cheers

 

You pretty much NEED BNRs to get in the 350-400hp range. As long as you put a pressure regulator on the pressure chamber, and use good check valves, you can run a sequential system right to the limits of the turbos.

Dave

 

My car puts down 350 rwhp on stock seq. system when I had boost issues where primary turbo wont come on till 4500 rpm, and my water temp sender broke, so it was running super rich. I then put a regulator per dgeesaman described above and fixed the temp sender, and it should be around 360+ rwhp. So yes, a working seq. system is where it is at IMO.

 

They seem to have just as many silly acronyms as us. As i understand it, our sequential system seems to used well... not the best parts as an attempt to keep costs down.

 

Uh, nope, I've been Stage 3 sequential since Aug 05. I know there's a few others too.

What no one seems to remember is that FD's came out at $32k....Supra Turbo's cost $50k. I would EXPECT a better system on the Supra. I think the I-6's layout helped a bit with the engineering of their system too.


As far as the "dangerous transition" goes, quite frankly this should almost never rear its head in street driving. If it does, frankly, the driver needs lessons. It can happen on an auto-x course with a certain layout. It should never happen on the track. Ever. Again, the "dangerous transition" while cornering is massively blown out of proportion.

 

But has anyone gotten sequential BNR's over the 400hp mark? If not; that's the dragon i intend to chase.

 

I run 91 octane pump gas except at the track...even with w/i, I'm not willing to go over 15 psi. If you drop in 100+ octane and go for 18 psi or so, should be doable, providing none of the lines blow off. It would probably be tricky tuning the transition at such high levels, I know mine needs a little bit of work.