Cetchup

Recently my twins went bye bye along with my motor. (original @ 82k). I am looking at either the BNR Stage 2 twins or the Apexi RX6 single. I really want to go single and get rid of all the TT madness. Also free up some engine space, reduce temps, make SAFER power etc...One of the things that moved me more towards the single is that is spools quite quickly and still makes 300+rwhp at low boost. I don't think I can say the same for the Stage 2s which I have heard have lots of lag. How much more realiable is a single upgrade rather than upgraded twins? I'm not looking to make 400+rwhp so the RX6 is fine with me. For anyone with this turbo (RX6), what injector size are you running? As of now I am placing an order for the Greddy 2-row FMIC and Apexi PFC. I have the walboro 255 fuel pump but am kinda worried not enough fuel will be on delivery? Which pump are you guys running? Thanks for reading.

2manytickets

running (2) 850ccs and (2)1300cc's, I m selling my rx6 never even driven in the for sale forum

TailHappy

I have 4 850cc's and a Cosmo fuel pump and I'm seeing about 80% injector duty at 13psi on cold days, so that's about perfect. If you're not looking to run high boost, then I think 850's are your best bet since you only have to modify your fuel rail, not buy a new one, and 850's are stock parts. There's debates about whether modified injectors are as reliable as stock pieces.

I think you'll like the RX6, as your reasoning is about the same as mine. The only thing you should be aware of, which I didn't take into account at the time, is that the RX6 comes with its wastegate vented to the atmosphere. Some kits come with it already plumbed back into the downpipe. If you don't want an EXTREMELY loud car, you will need to get the dump tube welded back into the dp. On the plus side, certain RX6 kits let you keep the air pump, which can be important depending on where you live

Good luck!

apexkw

on my rx6 car i am using the nippondenso fuel pump, 550 primary and 1300 secondaries. also i am using platinum 9's all around for spark plugs. my boost is real quick to come on and is nice and steady all the way to redline. my turbo feels like it spools up faster than my friends non sequential turbos. and tailhappy is correct about it being LOUD with the wastegate vented.

Ojek

I would rather spend my money buying T04E kit than the RX6 kit. It is cheaper and can produce more power than the rx6.

aimedhigh

550/1300. HF CAT, dump tube, stock motor, ND pump.-360RWHP @15. Rx6 is a great STREET turbo. The GT35/40 has more HP potential for racing, spools just as quick and already dumps to DP for the same price or less. Good luck

EviLPeNeviL

iTrader: (2)

Just for my personal reference of how fast your single turbos are in comparison to the 1/4 times.....

What is your fastest time and trap with these turbos with just basic bolt ons, IC, intake, exhaust, no super ports or anything, with ECU and tuning set at 10-12psi:

RX6?
TO4E?
GT35/40?


And when you guys say "spools quickly", can you give me a RPM range of when it starts to spool and when the turbo fully boosted?

Thanks.

-Dan

LUV94RX7

iTrader: (3)

I have the XS T04e kit. Profec B set at 20 psi. In 5th gear I floored it and boost was 5 psi at 2500rpms, 13 psi at 3000 rpms and 20 psi at 3500 rpms.

Ken

the_glass_man

iTrader: (2)

I'd go with the TO4E/S or the GT35/40.
Your SOL if you need to rebuild the RX6 and the wastegate the kit comes with isn't very good.

apexkw

i have full boost at 3000rpms. i am running 13psi until i get my datalogic and new boost controller. boost stays at 13 psi all the way to redline.

ojek he was asking about the rx6 cause he DOESNT want crazy power.

dan i havent been to the track yet because i want to work out all the kinks in the car before i go stopping on it. i still need more parts and dyno time.

glass man ah yes the infamous wasyegate problem. i have the original style wastegate that had the problem with it. i had mine sent to xs engineering to get ported and replaced with new bushings. i recently talked to Mas at apexi usa and he said that they now longer use the problem causing bushing and have redesigned the wastegate to get rid of that problem. the only 2 things i can see bad about the rx6 is the high price for the new model....but if you get the old ihi rx6 then it isnt a problem. same price as before. also i have seen alot of them for sale lately. and the second problem is getting the turbo repaired if you blow your engine and throw a apex seal into it. i have heard now from a couple people that apexi is "planning" on offering rebuild kits late this year or early next year. this is just a rumor and i have not confirmed it. although if you have seen greddy turbo kits are just as hard to get rebuilt because of lack of parts. just do a search and you will see what i am talking about.

anyways in the end it is just personal preference. and just get something that you think you will like. and if not upgrade!!!

happy rotoring

john

$150FC

BNR Stage twos are the shizzzzit. If you want quick boost, go with them.

Ojek

apexkw, the to4e will maxed out at 400 rwhp (safe boost level)
I think thats the power range that cetchup wants.
Besides, if he wants lower power just boost less than 1 Bar.

Dougie_fresh_007

i got my rx6 and i like it spools quick makes good power, and who ever said 15 psi was the limit see sig for mods all i can say is at 17 psi, wit open exhaust it pulls strong and smooth great for track racing not bad for the occasional corvette that gets on your nerves and remember max boost is merely how cool u can get those intake temps and if ur engine holds together, water/methanol injection is the shiznit

enuttage

RP fuel pump, 4 X 850cc injectors.

~380rwhp @ 14psi

Boost is pretty much full on by ~3200rpm.

I'm very pleased with the RX6 for both street and autoX applications. and my torque and power curves are linear, linear, linear. I pull all the way to 7K and could probably go to 7.5K (street ported).

As others have mentioned, rebuildability and cost are issues. For me, I think only the latter is truly significant. If you plan on tuning it yourself (assuming you aren't a master tuner) or pushing things to their limit (which it doesn't sound like you want to do), then I'm not sure blowing a seal is going to be an issue IF the car is properly tuned.

I'm sure you'll enjoy whatever you get. Gluck with it!

-E