Hey you all...just kinda wondering what exactly the highest rev i could get out of it and what would be safe to rev at...I was thinking at 7200 would be ok. and is there and kinda of computer programs that i can personally mess with the tune myself? The only reason i ask is cause the Corolla XRS revs to almost 9 and dont we have the same motors as what they do..Sorry i have tired the search button and didnt really come up with what exactly i was looking for...

thanks Justin

 

Full EMS as far as I know. No need to rev any higher unless you are boosted because your power falls off after 5800 or so.

 

no they are not the same motors....

and i want to say dezod has gone to 6900?? i may be wrong...and i dont know about anyone else...i think if anyone else is going high it will be Ptuning..

 

okay...and what research have you used to conclude that it is safe to rev the engine to 7200 rpms on a stock motor? i'm very interested to know because clearly you know more about this engine than toyota does since in their fear and ignorance, they capped the engine redline at 6500 or so rpms.

it is largly pointless to increase the redline because the power curve of the 2azfe falls flat on its face after that unless it is using some kind of forced induction. the 2zz engine in the corolla revs much higher because it is a smaller engine with a shorter stroke, and also has a vvt-iL for lift, so the lift in the camshaft helps the engine produce much more power at those higher rpms, while we only have vvt-i without lift. so even if the engine can rev higher, there is no point because by that point you should have already upshifted since you are quickly losing power.

there are not computer programs that let you tune the engine, you have to use piggyback ECU's, which are really only worth it (and entirely necessary) if you are again, using forced induction.

also, as i recall, when zpi was in business, in the decription for their fully built engine blocks, they said to set the redline at 7500 rpms...so if their built engines were recommended to only rev that high, why do you think a stock engine can go to 7200 rpms no problem? would a built engine really only mean a difference of 300 rpms?

no being mean, just being honest (okay, and maybe alittle mean)

 

he wants vtec? lol

 

It was just a simple ?...i am new to the NA world and have messed with mostly the supercharged and turbo cobalts and a few other and raising the rev showed good gains and turboing is on the way as i am buying parts here and there. so it was just a simple ?...so sorry i will get back in my hole..

 

we have all asked dumb questions at 1 point..lol welcome to SL

 

calm down...i come from that world too and know people doing wild things with those cars and revving stupid high but you have to remember they are not NA like our stock tc's...

 

I think the main issue with rev ing high in your motors is not the head... that can be built to handle 9500 rpm easy.... It is hte bottom end. He have a huge stroke compared to a 1.8 L motor like the 2zz to rev to 7500 safely you will need a built bottom end to handle those moving parts moving at that rpm.

 

i wasn't trying to scare you away from modding cars or posting on SL dude, but it is just kinda random logic to think that you can just come along and go i'll raise the rev-limitor and make more power! the rev limiter isn't there to hold back an engines power, it is there to prevent you from blowing the engine up.

in the most basic sense, you make more power by getting more air into the engine so you can add more fuel and make more power. like with a cold air intake, nitrous oxide, and turbo or super chargers.

 

you want to rev high? go 80mph then shift into 1st. Although i doubt your engine can handle 20k rpm.

safely, i doubt anything more than 7k would even be useful. probably wont make any power at anymore than 7k anyways.

 

don't know if you have ever noticed, but...the tc won't let you shift to 1st at those speeds. it has a gear guard to keep you from getting into 1st at too high an rpm.

 

Yes I believe it is 20 mph it better if you were going 100 and put it in 2nd ;)

 

i did that in an integra i had. lolz. it scared the ish out of me.

as with everybody else, the top end is golden if you build it up a little. the bottom end needs work just the same. look at some dynos for low power tc's. they all drop off mid to high 5k

 

^ quoting myself here lol

 

sorry if i came off as kinda douche...just kinda wanted to know. and i know there is a reason for limiter to be there stock but there are also reasons why people move them up..some motors can handle it and othere can not..now i know..Kinda sucks cause with the tc even basic bolt on's really dont add much...

 

Yeah, if you want to go fast in a TC, F/I is arguably the most rewarding. People will always have their favorite kits, types, turbo sizes etc but thats the best part, it's personally customizable because there is so much aftermarket support for these cars. If you need help just ask! Don't be afraid of people who make stupid comments. Those people are everywhere all the time in life... even scionlife.

 

drax has a good point.. even with forced induction you should verify with a dyno that you are still making power on the high rpms you are after with setup you have, otherwise you are just putting stress on the motor without benefit. right now i set my soft rev cut at 6600 and hard limiter at 6700 rpm still i shift before 6600.. i think those are safe for the stock head

 

ok well since i am a NEWB at this here are my ?'s

Have TRD axle back...Any benfit to adding a MID and S pipe? want a good mello tone..and thoughts?

Underdrive pulley...When buying the small size a new belt is needed as well correct?

I made a custom Short ram intake...Simply cut out the bottom of the stock air box, took out that 2nd filter thing in the box as well and added the Alum. Piping...any gains if any? and i had a full cold air and in rain situations it would bog really bad so i had to change it out..was simply afraid...

at the moment thats it..help? thanks for the answers if any...and please remember. i am new to the scion world..have worked with the Zetec motors but thats about it

 

Intake = cool noise and maybe some throttle response. S-pipe and resonator delete will give you a nice tone a free up the exhaust a little. Don't look for tons of HP with this car until you go forced induction or nitrous. It's a torquey little thing considering other 4 cyl cars and they don't like being revved to the moon. Shift at 5800 and you'll be on track with the power and torque curve. Have fun and hopefully we'll see you boosted soon!