MidNiteJedi

hey guys...my turbos are in need of replacement, what would you suggest...

1) go single turbo
2) twin turbo upgrade kit-assuming there is such a thing, and who makes them
3) get new stock turbos...

what are the pros/cons of each

thanks

djantlive

Single turbo would yield the most HP but it will have a lot of turbo lag so if you drive on the street at moderate speed and never go to the track, you probably want to stay with the stock TT setup. However, if you go single turbo, you can forget about most of the vac hoses that causes headache such as popping off and causing bad idle. If you like your car to be highly modified, this is the choice to go. I think you need to upgrade ECU so everything may run $5-6k installed. Ouch! Read the single turbo section on this forum to learn more if you are interested.

I think M2 and Rx7fashion make twin turbo upgrades. There are a lot of other ones I am sure. Don't know much about these. Maybe the fins are angled differently or the bearings are better.

You can have your stock TT rebuilt or cleaned. This will cost the least. Or you can buy a reman unit. Turbo city sells both the rebuild kit or a reman unit. I've heard mixed comment on Turbo City. You can also get a j-spec turbo that's brand new. That will cost you alot and probably more than M2's after market TT setup.

I hope this helps. Someone else who has more experience in rebuilt or aftermarket please chime in.

MidNiteJedi

thanks for the reply....lemme clarify some things...it will be my daily driver, along with auto cross and road racing ( dont do much drag, except on the highway ) so im looking for something with little to no lag, in the plans already are ecu and injectors/fuel pump upgrades so i have that covered...

thanks..

Zoomspeed

I think if you autocross you should stay away form the single turbos becaue you need that low end response.

I don't know what the advantages and disadvantages, if any, of high-flow vs. stock twins are so hopefully someone that knows more about it will post.

Here are some links to people that sell high-flow units:

www.m2performance.com
www.pettitracing.com
www.rx7store.net
www.srx7.com

MidNiteJedi

anybody know the difference b/w stock turbos and the "high flow turbos" (OEM) offered at http://www.rx7store.net/oemturbos.htm
?


yeah, im too lazy to call


better yet, anybody have them on their car? how do they compare..would you do it again?

LUV94RX7

iTrader: (3)

If you are looking for kick-*** performance below 3.5 rpms then you can't beat the stock setup. After that the singles eventually will kick-***. I went with T04e for fairly good low end and great top end. Your choice. My stock stuff is for sale as I don't need it anymore. Hope I made the right decision. I'll know in a few weeks.
I went with single for the simplicity not the extra power.

Ken

www.nopisons.com

Jason

iTrader: (5)

The difference is the high flows will flow about 15% more air than the stock turbos.

Jason

ZoomZoom

iTrader: (2)

Well as mentioned the single would yield the most high rpm HP but you would suffer low end power loss as well as big bucks on engine management and fuel upgrades, bigger intercooler etc. Many of the High flow twins still need an upgraded engine management so simplicity for a daily driver is with rebuilt set or New stock twins. Rebuilds cost 900-1200 depending on where you go and also some are not rebuildable because of cracks in the housings. The Hitachi turbos are not 100% rebuildable anyway so they rebuild will only be marginal and usually never last half as long as a new set. The problem is a new set cost about as much as a single turbo if you buy it from Mazda. I have a brand new set of stock Turbos still in the mazda box I will sell you for half of retail if you decide to go that route. I need to free up some cash to buy an SUV for the Winter. I just moved to New Hampshire and I dont want to try and drive my FD up here in the winter so I will sacrifice these to someone on the Forum soon. e-mail is michaelmauro@netzero.net

spyfish007

I think a single turbo kit is definately the way to go. So much of the engine/turbo system gets cleaned up and your engine becomes much more reliable without that spike. The Apex kit has no difference in power compared at low rpm when compared to the twins but kills it up high and in the mid range. The T04e setup is next with very little loss down low yet even more power up high. After that look at T04s/T78 setups for more power and more lag. I have a non-sequential setup now and it spools up all right. I will be going to a T04e setup before too long. I really have to question how many people who give advice about twins vs single setups have driven in or rode in a single setup. Talk about night and day. I really feel the Apex kit requires the fewest additional mods to the car because it doesn't make quiet as much power so you don't have to do as much to the fuel system as you do with the other single turbos. Also you won't be as likely to burn through clutchs or differentials. Feel free to ask more questions . . . . I think you can see in what direction I would point you . . . . .

rx7speed811

no fans of non-sequential stock twins here? i am trying to learn more about what it involves, but ive heard this setup cleans up most of the vacuum hoses and gives less lag than most of the single turbo kits out there, but still improves the higher end of the stock power curve without too much of a negative effect on the low end throttle response. quite a few members on the forum have converted to this configuration, and most of them seem to be happy with it.

please correct me if i have said something completely wrong. i am still trying to learn more about this setup, and just wanted to introduce another turbo option for MidNiteJedi.

rx7speed811

hey spyfish, how do you like your non-seq setup? would you suggest it to somebody over a stock sequential setup (pros/cons)? thanks in advance.

rx7speed811

oops my bad spyfish, just saw your reply in the other thread. thanks again.

spyfish007

any other my comments on the non-sequential setup?

DefBringer

What Apex kit are you talking about? This sounds good.