Hi

I've put on a catback, pettit highflow cat, dp and intake.

ive driven the car alittle and had solid boost wich i had set to 9 psi with a valve between turbo and wastegate.

Will i be safe driving it like this?

I was gonna tune my car but after my car had been sitting for over a week now without the company doing anything and today they said they wouldnt be able to tune it cause they dont have any time. Where i live(sweden) there arent many people that are familiar with a rotary, and many tuners are already booked the whole summer, so i won't be able to tune it this year

If i were to drive it i would put it at 10 psi since i have a solid boost pattern with absolutely no peaks.

 

think you'll be fine, but don't hold me responsible
As long as you keep it at 10 lbs, you shouldn't have anything to worry about. If you can manage to keep it at 9, even better

 

 

you should definately go to wade lanham's site. i can't recall the URL, but do a search and you'll find it. You'll find a very good section on the "3 mod rule" and you'll also find real world wideband data on different cars set up different ways.

 

I'm kinda new but from what I've read I belive that the problem can be not enough pack pressure which will create boost creeps and spikes. A lot of people port their factory wastegate to help vent off some excess pressure or just replace it with an aftermarket one. I belive that if you can keep it to 10lbs or less and make sure you have enough fuel in there you should be ok.

 

Well with his mods I don't think he needs to be concerned just yet on not having enough fuel. You'll be fine. Good luck getting it tuned.

- Steiner

 

Without a midpipe, creep and spikes shouldn't be an issue (with an MBC or EBC). Porting the wastegate is not necessary when running a cat. People do not replace the factory wastegate with an aftermarket one unless they have gone single -- the factory wastegate is internal.

TobiasRX: YOu should be fine if you keep boost to 10 psi. Go to a dyno with a wideband 02 sensor (not sure if you have any local to you in Sweden) to verify your A/F ratios are ok. If you don't feel comfortable with that, just get an M2 or Pettit ECU to be safe. Ideally, you would get a Power FC but that can be tough to deal with if you don't have anyone around to help tune it.

 

Thanks for clearing that up Still trying to learn as much as possible

 

Hi!

In oslo,norway i think www.crazytuning.com can tune your car, Im 99% sure they knows wankel good enough to trim it a bit(One of them got a rx7)

Contackt them and ask them.

 

I'd say get an ECU if you plan to do it ever. Better to do that than chance it. Even the best ECU is less than a rebuild.

 

Thats why i already have my AEM ECU but the problem is noone has the time to tune in unless i wait for a couple of months.

Anyways since i never got it tuned they compensated me with a run on the dyno. I had the boost set to 8.5 psi and i got 245 on the flywheel, 202 and the wheels.

Don't know if he compensated for my 18" wheels though.

Anyways how much more HP could 10 psi give me?
Never tried it there cause we're not exactly friends.

 

10 PSI or Dyno Tuner not friends.....??? I would think hard bout having anyone i didn't compleatly trust tune for me..... And experience has shown me that after i learn about something i generally do it very well. Learn to be more independant. Educate yourself on this AEM. Best to you, Carter

 

To read Wade Lathams site just follow......www.newwave.net/~flanham/wlanham/ Good Reading , and way informative...GWAD... therzs sooo much to learn in this life, and a short time to. Carter

 

Don't really know what you're talking about. I havent tuned it, running on stock ecu with 8.5 psi set with a boost controller. only curious about the hp with 10 psi

 

I know the M2 ECU is not suggested for use with a midpipe. Does anyone know how M2 or Petit feels about using their ECU's with a high flow cat?

 

I believe Pettit has a lot more flexibility when it comes to chip programming, where as M2 just has three levels. I know some people on here have ran a midpipe with an M2 Stage 3 and still ran rich. Boost spikes and creep would be a concern though, since I think M2's chips only support 12 psi.

 

To answer your question on hp, I believe the rule of thumb for turbo cars is 11hp for every 1psi of boost increase. This is assuming that your car can handle the increase in boost and still run properly, which it sounds like your car is capable of. So you can safely say 1.5psi will increase your hp about 15hp.

 

what about a streetport, dp, mp, cb, and stock airbox with stock ECU?

 

Are you serious?

 

I run a street-ported motor w/99-spec turbos, hks dp, hi-flow cat, gt-spec exhaust, intake alll with the stock ecu. The ONLY thing wrong is what is prob insufficient spark (since the plugs & wires are still pretty new).
I keep it at 10 lbs max ALWAYS. The spike is at most to 10 1/2.

 

I wouldn't run a streetported motor on the stock ecu because of ignition timing issues. BTW, you are not running a midpipe, which is a HUGE difference. From most people's experience, it's impossible to run less than 12 psi with a full exhaust.

 

Yes I am serious, I should have gone into with more detail. I am going to break it in on the stock ECU with streetport, cb, mp, dp, stock airbox. I will send it to Pettit to get it reprogrammed/chipped. I was just wondering if it would be safe, plus I have the precontrol and wastegate actuator's looped where they go into the solenoids so I should be running around 5~7lbs max (?). Sorry for being dumb, I haven't read anything yet on this

 

I would never run a midpipe with the stock ecu. I don't see how you will prevent it from creeping above 10 psi, even with playing with the turbo control system.

When you say "break it in", I assume you just had an engine rebuild. Why would you risk the new engine? There's nothing wrong with breaking it in using the Pettit ECU or Power FC, it would be a lot safer.

I guess it depends on how much you like to play the odds.

 

If you're running more than 2 mods without more fuel, you're playing with fire. If you cannot afford a $600-$700 proper fuel management solution, go buy a Camaro. There are just simply too many of these cars being ruined by people with beer budgets and champagne taste.

 

if you keep yoru boost under control, youll be fine, watch for boost creep at high rpms in the upper gears though

Im personnaly running intake (true cold air which is comming from the front of the car), dp, mp, catback, large smic, hardpiping for intercooler and stock ecu and have been doing so for a pretty long time, my boost has always been set to stock levels and it doing just fine!