13B engine...

12 psi
Bonez DP
RB 9.5lb Flywheel
01' RZ Spec Turbos

Other:
NippoDenso Fuel Pump
Fluidyne Radiator
ACT Street/Strip Clutch

No ECU yet. BTW... anyone know if that's dangerous as of now? And also, can anyone guesstimate how much power that will put out?

Thanks for the help!

 

do not ever run more than 10 psi on stock ECU, expecially with 99 twins. get an ECU asap.

ps, how do you know what mods you have? th engine in the FD is called a 13b-REW, it's the only engine offered in the FD.

 

#1 how are you running properly with an upgraded fuel pump and no ecu? I would think that it wouldn't run properly. #2 like he said don't run over 10 on stock ecu your just asking for a rebuild. Get an ecu and I can see you running 300+ to the wheels maybe.

 

rx7spiritr, he doenst have stock turbos, they are 01' turbos, which i think run at 12 psi, so the 12 psi is normal. but running 12 psi on the stock ecu will make you run lean. and yes, get an ecu asap! dont drive the car hard until you do. with those mods, you are probably running on the lean side.

 

really? The 99's run 12 stock? Well I didn't know that, guess I do now!

 

How did you come about that 12 psi figure ?

your not gonna be running hardly any more power than stock. The 01 rx7 runs at 12 psi because of less exhaust back pressure, better air flow to intercooler and induction kit, and because the ecu is set to run at 12 psi.
If you have a boost gauge you will see that you will still hit 10psi as you did before. If you wnat 12 psi best option is to get an aftermarket ecu, if you don't wantto go that route but still want 12 psi then get yourself a boost controller and set it for 12psi and a fuel cut defender fitted so you don't get fuel cut to the rear rotor.

rgds

 

Get a ECU first of all.

I would guess that you prob have around 300hp. The flywheel wount give you more hp but it frees up alot of hp. You might be ok for a while 12 psi and a fuel pump to help you out but realy get a ECU soon. Start monitering your setup.

 

Well forgetting that fact that he may or may not have the mods listed. I put down 260 rwhp with a downpipe, intake, Power FC and 12 psi. Given that you have the stock intake, and the stock ECU, your numbers will be slightly lower than mine, so probably 240-250 rwhp.

No way in hell you're reaching 300+ with those mods. Finish off the exhaust, upgrade the IC, ECU, and injectors. Then you'll see 300.

 

i talked to the guys at pettit racing...........with the mods listed in my sig., he sed ill be just fine as long as i keep it under 12psi. so i keep it at 10 and if i feel the need i put it at 11.............

 

Ok... PFC... here I come!

BTW... does anyone know how much tuning usually costs? I've never tuned before... and I don't want to mess around with that.

I'm thinking about finding someone to do it for me rather than have the shop do it as I have heard it is expensive.

I live in the Bay Area if anyone knows someone

EDIT: Forgot one question, where is a good place to get a cheap PFC?

 

You do not need an upgraded ECU to install a different fuel pump. Larger injectors are a different story...

This is kind of a trivial thing to question the guy on. While technically true (the motor is officially 13b-REW), it is built on a 13b block. The REW just signifies it's a twin-turboed rotary. Calling it a 13b it perfectly fine and correct.


Rob

 

it usually costs about 300$ to have it done..but i wud only trust a few people

 

Is that professionally or privately Redline?

 

i dont mean to say he is lieing at all, im just trying to guage whether he knows, or was *told buy some guy*. new member 1, "newbi q." 2, was my reasoning. not meaning to hate at all.

 

profes.

 

Typical newb question

 

Just a small suggestion here (seriously, not meant to sound like hate): You might want to take smaller steps and do a bit more research before jumping into the deep end head-first with mods on your FD. Otherwise, you'll most likely end up with numerous problems that will put you and your bank account into tailspin because you didn't "think it through" first. Just a thought...

 

What do you mean? So I shouldn't get an ECU regardless my boosting 12 psi?

O_O

BTW... I've been doing research on this car for 4 months now... I just bought this FD with these mods, just trying to do the right thing to keep it in good shape...

 

10psi max on stock ecu no fuel cut defenser bullshit 10psi max its no joke

the fuel pump is fine with the stock ecu it will slightly raise the fuel pressure making you run rich

and you dont have a lot of power with just adding a downpipe and assuming your engine is a little used maybe 235rwhp but who knows

you gotta get a boost gauge and make sure the boost stays to 10psi. get a nice electronic boost controller if needed.

 

If you're "doing the right thing to keep it in good shape", why is the title of your thread "how much horsepower with these mods"? "4 months" of research, and you don't know that boosting to 12 psi on a stock ECU is dangerous? No boost gauge? In another thread, you're talk of getting a large SMIC; you do know about all the peripheral stuff that comes along with that, don't you?

As I stated, I wasn't trying to post a "hate" reply, but you took it as such. Just trying to help you out, but whatever...

 

I have a boost gauge. I maybe only boost a couple times a day, but not for a long period of time, and never over 6 psi.

The reason I ask how much power is because I just want to know for the sake of knowing...

I know that 12 psi is dangerous but can't I ask opinions before I go and spend 1200$ on a computer?

There are no stupid questions, except for the questions that are not asked.

 

Heh...riiiiiiight.

Think about this statement you made here. Oh yeah, and your first post:

BTW, I never said not to get a PFC. All I was saying is to take your time with mods, don't go banzai in your haste to get hp.

 

hi ubernoober,

there are some really good FAQ out there, including this site. Look at these, study these, know these by heart, because in the end, it will save you money and you will gain knowledge. Max Cooper's got a good site http://www.maxcooper.com/rx7/ and Paul Yaw has awesome info on the rotary general and the RX-8 http://www.yawpower.com/techindx.html and
http://www.scuderiaciriani.com/rx7/index.html

Start here. If you have a horsepower goal, understand you will be spending money to get there. Also, consider if you need emissions or do not need it. Odds are, you are not even close to 300 hp at the wheels. Remember these cars had about 255 at the flywheel and that means there's a lot less at the wheels. Gtech Pro Meters are usually within 10 hp or 0.01 accuracy in times. It's a good rough estimate. Chasis dynoes usually cost around 75-80 for a hp pull. Dyno tuning (Power FC, Motec, AEM, PFC, etc) usually run 150 or so an hour. Sometimes we get pros like Steve Kan to do group tunes and I forget how much that runs... 300? something like that.

My advice, do research. Know what you want and your limitations. Also, how are you boosting 12 psi? Are you using a manual boost controller, ProfecB, stock? Are you sequential (probably) or non-sequential? There's a boost pattern for sequential turbos you should look up. There's a lot to know than just bolt this on and boost that up to get power. Do it right the first time by doing the research on the forum (search link for days) and learn from other's misfortunes and fortunes.

The 3rd Gen RX-7 is a beautifully crafted car. It demands respect and like a hot woman--requires lots of maintenance and care.

 

Thanks for the sites, I usually read on those, never heard of Yaw Power until now though. I'm boosting 12 psi max because my boost pattern is 12-8-12, so I try not to get on it above around 5-6 psi, and rarely do I boost unless on the freeway. And yes, I am sequential.

I am not going for horsepower, just going for reliability first, then eventually the power.

 

That's smart you are going for reliability and it's the way to do it. Good luck! Oh, make sure your gauge is correct. What's your vacuum? I thought I was boosting 9 lbs of boost but it turned out my Autometer gauge was a POS and I actually only had 7 (wastegate spring weight). I verified this by measuring vacuum with a seperate gauge and comparing it to my autometer gauge ... off my ~2 lbs. Do'h!

If you don't see yourself doing much more in mods, a Petit ECU will do just fine and they run under 400-500. If you plan on more, then PFC is the way to go if there's a tuner in your area. Tuning this car isn't something you want to do on your own unless you can accept the risk you blow up your motor (I went through 2).

Happy rotoring!