GoRacer

iTrader: (2)

OK, so I started removing the twins. That was depressing case I fixed all the little things and never got to appreciate it with the new mototr. So I plan on keeping the ACV (for now at least) which means how much of the rats nest gets left in? If I get rid of the ACV I can remove the entire rack, right? Any help and/or pictures would be appreciated very much. thanks.

Fuel:
850/1300's
Nismo SKyline GTR34 fuel pump
Sard FPR (stock lines)

ECU:
Apexi PFC
(may add high boost control kit)

Turbo:
A-Spec GT35RS-T4
(custom to fit air pump)

PhatManBUD

Yeah, remove the whole rats nest, makes ur life easy, u dont need it when going single and w the powerfc

GoRacer

iTrader: (2)

DOn't I need something for the ACV? ...silinoids or something?

PhatManBUD

uh...with single i dunno. the only connectors i have under there now is the AIT, and fuel inyector connectors. Theres 2 others on the back side of the manifold but nothing else under...

A-Spec Tuning

if im reading your post correctly. you DONT need the ACV ..... By reading your signature i see you have an A-spec low mount turbo kit so i assume you want to keep the airpump on your car in that case you would keep the ACV intact or you could run the airpump discharge directly to the split air pipe by the cat and run a switched relay and you could manually turn on and off your airpump.

are you just putting the airpump/main cat to pass emmsions and then immiedtely taking it off?

Efram

rynberg

Why bother? You aren't going to pass visual smog test in this state, so why even bother keeping the airpump and all the emissions crap? Just asking.

GoRacer

iTrader: (2)

^^ yes, I have the custom T4 Shorty to retain the air pump. I currently have a mid pipe. After the car gets dyno tuned, I will add two hi-flow metalic cats in the mid pipe. I blocked of the split ait pipe and will run the ACV. The air pump will be permanent for highway patrol visual inspection as well as smog inspection. I may reverse that ditching the ACV and run only the split air pipe like Atihun has done and you sugested but for now what do I need to retain the ACV?


^ I have passed visual with an Apexi FMIC and intakes. I don't think I will have a problem with visual if using a HKS metalic filter that says HKS on it for the single. The smog pump and dual metalic cats should pass the rest. Besides, I don't want my car impounded by an ******* Captain when I threaten to kick his !

rynberg

I suppose you could get lucky enough to find a smog tech who will think a single-turbo is a legal option....but I wouldn't count on it!

Intakes and intercoolers ARE legal if the original turbo(s) is on the car. That's why you passed with those.

Check out Chris Regan's writeup....it's a great write-up in general:

http://www.negative-camber.org/crispyrx7/gt35rpage3.htm

GoRacer

iTrader: (2)

Actually it's not posted anywhere underhood (to my knowledge) or on the registration that the engine is a twin turbo. The registration and underhood sticker states turbo. The 95 sticker doesn't state EGR. Intake filters are the first thing to make you fail. You can be completely stock except for the filters and fail. HKS and Injen (i think) have CARB legal intakes. The only way they would know if the single was not OEM is by not having a plastic box intake, otherwise you need CARB #'s.

Nice write up, thanks for the link!

4CN Air

iTrader: (7)

I've heard only bad things about the Boost Controller add on for the PFC. I'm happy with my ProfecB spec II but it's my first electronic controller so what do I know

GUITARJUNKIE28

that's because they're smog legal

GoRacer

iTrader: (2)

^ Actually both the intakes and FMIC by Apexi are not CARB legal "but" the FMIC is not labeled and if the tech has no idea what Apexi is then ....(censored).

Yeah, i've only heard praise for the Profec-B but that's another seperate box to add and even though people don't think the PFC is as acurate for boost, it's simpler and cleaner for me which makes it easier to work on cause i'm not a mechanic.

GUITARJUNKIE28

not because it wasn't labeled.

intercoolers are smog legal--it says so in the smog inspection manual.

i may have been wrong on the intakes, but there are TONS of them that you'll fail smog for if your guy is an idiot, but are legal. you really gotta find a shop that has their **** together.

signofinfinity

May be off topic!

I just blew the twins. still during running in. I got the TO4R and 4 850cc, stock intercooler and 6 psi wg spring... am i safe till i get the extreem fuel from jason and fmic? at least till i finish my running in?

sorry for jacking the post... but i was building my own single kit.... and i ended up ahead of schedule.... the rear turbo quite.. really jumping and banging in the housing... so i was wondering of your guys opinion

Thanks

George

signofinfinity

^^^^Bump...anyone???

dubulup

stay off the pedal (no WOT), and you'll be fine

a single turbo has a different power band than twins...i.e. more cfm in different places...so throwing bigger injectors in and calling it a day won't be safe.

signofinfinity

sure.... rpm limited at 4000rpm
fine?


Thanks

GoRacer

iTrader: (2)

signofinfinity

soooooooooorrry......a thousand apologies. But i kept with the thread title...

Thanks anyways.

GoRacer

iTrader: (2)

^ Try not to boost if possible and stay under 6k rpm's. If you have a street port, it requires more fuel (same as higher boost) so you can think of it as running 8lbs of boost even though it says 6. The higher up in hte rpm's you go the more in danger you are of running lean. Moreover, if you are not at least running o copy of womeone else's To4R and you are running just the base map that's more to be worried about. Make sure you at least change the injector size and sequential setup on hte commander.

signofinfinity

thanks.... i will actually put in a 3 psi wastegate spring 5500 rev limit and 4 850cc. I am running the wolf ecu, and i will be sure to run the aft at 15 if possible... to avoid lean spots.

I will speak to jason at rx7 store for the ultimate fuel setup.....hope he can give me a good price

Thanks for your support

George

GoRacer

iTrader: (2)

Where's does everybody get the 2&3/4" piping from? I can only find 2.5" or 3" pipes.

atihun

Use 3 inch piping and get a silicone reducer from ATP Turbo.

GoRacer

iTrader: (2)

I will be doing a similar setup but i've decided to keep all the solenoids (including EGR) and plug them in. I beleive I can tell the PFC that I am using a single setup so it should just ignore them? ...is that true, or will I have problems? This way I do not have to remove them from the wire harness and I have a fake stock look. I will retain the ACV and loose the air pipe like Crispy has done.

Are there any pics of the T4 install? I know there are not that many differences but I am not a mechanic even though my goal is to be a weekend DIY hobby. ok, i'm stressin' out here

GoRacer

iTrader: (2)

Wow, I can't beleive I droped the engine in myself. I still don't have a shortcut for attaching the block to the trans. What a flokin pia that is!

Got heat shield from ATP turbo.

Got reducer's from turbohoses. Since compressor outlet is 2.5" and FMIC inlet is 2.75" I got the reducer/increaser coupler. So should I stay with 2.5" pipe up to the FMIC or I can get some 2.75" but they are thin 1/16"?