Hey i have a 10th AE and i was just wondering if because of the turbo the low end torque suffers. If i am anywhere below 3k rpm my car dogs it like a poodle, even at open throttle i will nearly be stagnating untill it gets above 3500 or so. Is this normal because i know that the rotaries just love those high rpm's...

 

My TII felt like that when it had a clogged precat. I would suspect exhaust restriction unless you have taken care of that already.

 

Mine wouldnt boost at all with the stock cat/precat. After I replaced them, it boost really early..

 

1500RPM+ it isn't too bad

2500RPM+ it pulls like a sonofabitch

4000rpm+ it makes passangers say "holy ****"

so as you can see, its kind of a building power curve... by 3500RPM it should certainly be pulling HARD... by 2500RPM you should see full boost, and it should certainly feel like it's getting "on" the powerband

 

Exhaust restriction or you ar running too rich. My N/A was running really rich and did the exact same thing at anything below 3-4k RPM.

-Joe

 

It could also be running way too rich at low rpms for ?????? reason. The only way to tell for sure is to have someone put a wideband on the car and take a look at the afr. Maybe go to where there is a dyno??

 

i have an N/A, that little ****** will pull hard from 2k in the lower gears. 4th and 5th will pull hard after 4k. its fun! yea, i agree with the other t2 guys, you might wanna replace or take out your cats all together. unless you have emissions laws where you are, then it might be a good idea to get new cats.

-chris

 

this car has a lot of torque, but nothing under about 2500rpm

 

my car doesnt pull for **** in first, but in second it pulls real good.

 

yea out here there is no emissions laws, so all of the cats have been removed with a straight-thru bonez system (sweet ) i am running incredibly rich though, and im not sure exactly why either. im just affraid to try and lean it out because of the problems with detonation, and how would i go about leaning it out without buying an aftermarket fuel controler like the apexi afc i was looking at?

 

mine pulls like hell know , with the supercharger i have 6psi at 1500rpm

 

You know, the point of a turbocharger is to give it more 'low RPM *****'
They make the RPM's go up quicker [especially lower rpms] without giving it a hell of a lot more horsepower which = lower racing class = lower insurance etc... Superchargers on the other hand double the hp and make em scream

 

mine has big bad cojones when i open the bottle.....

 

Something doesn't make sense there. If you have no cats... you should be boosting more than stock... which means you should be lean. UNLESS, the previous owner (I'm assuming you recently purchased the car?) put in some larger injectors to compensate for more air.... but didn't buy the necessary hardware (AFC) to tune them down.

THe only way your going to take away fuel is with a fuel controller or smaller in jectors and the latter would almost certainly be a step in the wrong direction.

-C

 

This is what i have done: its a stock J-SPEC engine (most likely stock injectors too, i didnt change them) with a straight thru exhaust. The other owner blew the motor and i bought the car from him for 250 bucks (quite a steal eh?) theres no emmisions crap, the ACV is still on there but i plugged it up. I agree, it should be running leaner, but whenever i stop the car or i have people drive behind me, they say that they can smell the fuel, and it smells really potent. i havent actually checked the air/fuel ratio with a meter, but my guess is that its still running very rich.

 

Yep, that's the way it is for me too.

Gotta love it.

 

Turbos increase low end torque by a **** load. I owned an N/A before my TII and it had no torque under 3k.
My TII pulls me back at 2500k with a decent amount acceleration.

 

Increasing boost does not make the engine instantly run lean. Unless boost is excessive (and just removing cats won't do that), the mixtures will still be quite rich under load due to the conservative stock tuning.

 

I drove a stock tIIs and it was a dog for power in the low band when partial throttle is applied. If I wound up the engine and kept my foot _all the way_ in the gas, it would spool the turbo and accelerate almost as fast as my ported NA does. But it was heavy and stock, while my NA is 2400lbs and ported.

To answer the original question, yes, for an NA, I would say that my car has low end *****. It has more torque than before I ported it and it is sometimes hard to drive gently in town due to the instant torque response. It's no V8 but good for an NA rotary.

 

rotaries dont have low end torque as a rule of thumb :P unless of course you have a supercharger

 

All I know is I can do without the low end tourque when I have what I have at 4500 rpm and up

 

I ve got a tII 88 w/ 370 rwhp. I put a cut out where the cat was and i was making full boost by 2k.The only problem is traction.dont do this you dont have enough fuel.why do you want low end tourque you can rev for ever.you are going the wrong way.you want to leave the light a little quicker leave at 4-5k.any questions ask the 7 in flames.

 

EGGGGZZZZACTLY! It seems to me I'm the only one on the face of the planed that is taking fuel AWAY when using a SAFC. That's on two different turboII. In my honest opinion the stock ECU runs pig rich. I'm using a wideband to confirm that (in my mind anyway). Now I don't have the three inch full exaust, just the 2.5 inch downpipe and presilencers and exaust ....but the things run pig rich in my opinion.

For what it's worth.......a jackup afm will cause the engine/ECU to so rich it will lack power and have the symptoms you describe (Cold Fusion Turbo ).

 

If you dont think you are running pig rich and you dont have a wideband go take an emissions test in the state of wisconsin and compare your hc content to the legal limit. Its pretty amazing.

 

I live at 4500ft. elevation, and whenever i drive to phoenix at an altitude of about 2300 or so, this problem stops. That would make my car lean way out and stop this rich b.s., so i guess the SAFC would be the way to go. But still, who needs low end when you can rev forever?