Hey, I'm new to this forum and am researching the different options for a sentra custom turbo setup. How does this sound to you: Gtir manifold with t3 flange and t3/t04b turbo, vortech
FMU, Walbro upgraded intank fuel pump, check valves to fool the mafs, stock injectors and ECU, starion FMIC, 3" exhaust. Plus all the misc. small parts, hardware, etc.

I wanna do this cheap but safe and still run 13's with daily driven reliability. Can it be done on this setup? What boost could I run with this setup and what hp at the wheels do you think it'll make?

Thanks
allen

BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOM!!!!!!!!!!!!!!!!!!!!!!!!!!!!

No...

Originally posted by allen
Gtir manifold with t3 flange and t3/t04b turbo, vortech
FMU, Walbro upgraded intank fuel pump, check valves to fool the mafs, stock injectors and ECU, starion FMIC, 3" exhaust. Plus all the misc. small parts, hardware, etc.

I wanna do this cheap but safe and still run 13's with daily driven reliability.

Thanks
allen

ummm, what is wrong with the JWT computer? it is not much more expensive than the FMU, and much more reliable.

the T3 flange with a T04B compressor would not be worth it. just use a GTiR turbo if all you want is 13s. hell, my car hit 12s with a T25, and it is daily driven, reliably (with the exception of the tranny)

if you want to go balls out, but maintain good street drivability, a T25 exhaust turbine with 0.86 A/R housing and a T04B compressor with a Garrett BB center section would be great. this is, of course, Rob's Disco Potato T28 contraption. see the Disco Potato thread for more info.

GTiR T28 could easily take you to mid 12s with a good driver.

Hotshtsr20: Isn't the JWT ECU around 500$ and my friend just bought a vortech FMU for 140$. Maybe we're not talking about the same things here.

Also I'm a little confused, why wouldn't the t3 flange be worth it with the t04b compressor, is it because of the cost? Because I already have the turbo which I got new for 445$ but I'd love to go cheaper!!! I know i've got way more turbo than I need but I bought it for a different project that I gave up. Should I just sell it for a t25 or t28 turbo and gtir manifold like the stock sr20dets?


thanks for the help
allen

to run the GTiR manifold, you would have to convert it to a T3 flange. it is up to you if this is worth it.

run the JWT computer. the FMU will seriously risk your motor or give you shitty power. yes, it is $500, but a penny saved today is a penny spent tomorrow.

hotshtsr20: Thanks for the advice, now about that JWT ECU, is that what you run? Will it allow me to run the stock inj., for now and then upgrade them and raise the boost later without a reprogram? Also, what do you recommend for the fuel pump, an inline, or walbro, or 3ztt, etc.

thanks
allen

In short:

FMU=shit, go with a JWT ECU, spend the money now, enjoy peice of mind later.

T04B is an old compressor design, the T04E is a newer, better design. Both are oversized for what you are trying to accomplish. Get a T28 or T25 and be happy.

Forget running stock injectors, not enough fuel. Just pick up some used 370cc injectors.

You don't need a bigger pump if you go with the 370cc injectors.

You must consider ALL costs. DON'T HALFASS A TURBO SETUP. In the end, you will most likely end up spending more after breaking/replacing things, than it would have costed to do it right the first time. If you don't have the money now, be patient, and save.

Have you considered the following: Clutch, gaskets, drilling block, intake piping, mounting brackets, downtime with the car, shipping.... it adds up fast!

the stock injectors are close to topping out on some bolt on cars. you NEED to run at least the 370's. there is no such thing as a JWT 259cc turbo program.

you will explode on 259's.

T04B is an old compressor design

maybe, but the housing doesnt matter, as there isnt much engineering involved in the housing. it is the wheel that is the real gem, and garrett is releasing (as i am sure you know) an advanced version of this compressor with the GT series.

old doesnt necesarily mean bad, as the T04E is also fairly old.

Ask Unlucky what he thinks of FMU's...

Danny

A good FMU like a Vortech isn't that bad. Travis blew up because his Deltagate wastegate spiked. You don't need check valves because MAF sensors can read boost. Map sensors can't. With the FMU and stock injectors, you could get away with it, BUT, it would be risky. I would go with 370CC injectors and run a FMU if you INSIST on not running a JWT ECU.

92SE-R: So, if I go with the 370cc injectors and an FMU what type of unit would I need to control the injectors to prevent them from pumping too much fuel? (AFC, PCM, laptops and such?)

Lyn Labahn: Yup, believe me I've considered every little nut and bolt to a custom turbo system and I know it does add up very quickly, that's why I'm trying to avoid the JWT ECU, at 500$ that's a huge chunk of change, and about what my friend has in his whole turbo system in his CRX! :mad: ! Also, if the FMU=shit why do so many turbo kits come with them? The honda guys use them a lot and they seem to work well for them.

thanks
allen

If you do a archive search(near top right of screen) you will see the JWT/FMU/Apex Super-AFC routes have been discussed. If you go the with FMU you will probably need a Super-AFC to tune out the rough spots in the fuel curve anyways. I've seen Honda's run FMU's they are usually pig rich(under boost) unless they have the AFC or similar to play with the fuel trims. Also with an FMU you might want to consider a fuel pump upgrade as your fuel pressure will go through the roof under boost. If you or if you can find someone thats knows what they are doing , of course you can make it work. And your friend has $500 in the whole turbo system?? That's sounds scarey to me. Must be all used parts???? How long has it been running??? Anyways a few people have went this route some blew up , some didn't. my $1.50 worth
Travis

I thought about the non-JWT route as well and I found that, like other's have said, you aren't going to save any money. If you have the money and WANT to do it all yourself, get something like a TECII standalone system. Otherwise, get something like a JWT or Hondata ECU. If you go T25 or T28, a Bluebird/Avenir ECU should work as long as you have the same MAF, TPS, and injectors that that ECU was made for.

The reason why people bash the FMU's is when compared to the other option out there, the JWT ECU, the FMU is like a stick compared to a gun. Yeah, the FMU will work, but the JWT ECU is just so much better. The reason why they are so popular is not because they are good, but because MAP equipped car's that have 1 bar MAP's don't really have any other choice. The only other option they have is to go a 3 bar MAP sensor with a standalone. That means A LOT OF money. A lot of dyno time.

Skyliner, the guys that are running pig rich under boost have the wrong FMU. The FMU they have is adding too much fuel pressure for every lb of boost. There are many different FMU's to choose from. For example, you can get a 12:1 FMU or 11:1 FMU. The 12:1 FMU adds an additional 12 psi of fuel pressure for every lb of boost. The 11:1 adds 11psi. The AFC merely allows you to fine tune the fuel. THe FMU does the majority of the work.

Originally posted by 92SE-R
Skyliner, the guys that are running pig rich under boost have the wrong FMU. The FMU they have is adding too much fuel pressure for every lb of boost. There are many different FMU's to choose from. The AFC merely allows you to fine tune the fuel. THe FMU does the majority of the work.

Most of these Hondas I see running around here are from one shop. I'd imagine it's the shops fault, as I've had dealing with them in the past. They talk bad but can't back it up. I have raced two of their turbo Honda's with my old SE-R, 75 shot of NOS toke em both down. They would keep whining about 'just wait to we get them tuned'. It's been almost 1 1/2 years , one is blown up and the other is still running 'pig' rich. I guess I should have stated that in my original post, but still not the best option unless you know how to tune.
Travis

the reason turbo kits come with FMU's is because that is the cheapest way to go without really investing in some expensive electronics and dyno time. Like skyliner was trying to point out, hondas may run that setup, but they all run like shit, and on this forum, many people are of the opinion that honda guys dont know shit.

Hey, thanks for all the input guys, it's really appreciated!

FastNX: Thats pretty ridiculous to say that "honda guys don't know shit". You shouldn't use such sweeping generalizations. P.S. I'm a Nissan guys all the way:)

thanks again
allen

I know I'm not saying honda guys dont know shit, i mean are there any 8 second nissans? But cdome on, howq many nissan owners are like "guy i got 18 inch rims and five inch drop guy" And many of their turbocharged cars dont run well at all, partially because they don't know what their stuff is or how to tune it. If there were a game show with random nissan and honda guys to see who knows the most about cars, I'm sure nissan would win more than honda

umm, the reason hondas hit 8s and nissans are "only" in the 9s is because of money.

it just isnt glamorous enough to support a $100,000+ FWD nissan drag car.