just wondering once and for-all what the redline on the 98+ JDM ITR motors is. Seems alot of web-sites all have different information. Some say 8400, some say 8900, some say 8800 and some say 9000

my tuner tuned mine and set the limiter to 9000 but the power-band drops off around 8700, im thinking of changing my limiter down a bit sense i never really rev to 9k anyways. No sense in revving that high if im not making power.

Its stock besides i/h/e hondata and other misc bolt on's.

 

"Red Line" and "Rev Limit/Fuel Cut" are 2 different things and numbers.

And Both, JDM or USDM can be found by using the friendly neighborhood SEARCH feature.

 

seems i couldnt find any results but it was because i didnt search archives, i searched the recent's

my bad

still seems like 1000 numbers are being thrown out. I know b18c5 is 8400.

I think ill set it at about 8600 or 8800, that way i can shift a little past peak power and stay in a larger power-band with more momentum. Probably 8600 sounds good for the safe side of things.

 

why not find an image of a jdm itr cluster and go from there.... from the best motoring videos... the rev limit is at 9k (or so says the translation...) but like the guy above said.. rev limiter and redline are two different things

 

Redline is 8400. Not sure about the rev limiter.

 

the limiter is set at 8399. right where the red start's. the reson why most people see it at 8700 on thier stock computer's is because your stock tach isn't all that accurate to say the least. but 8399 would be your answer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by digital sol &raquo;</TD></TR><TR><TD CLASS="quote">my tuner tuned mine and set the limiter to 9000 but the power-band drops off around 8700, im thinking of changing my limiter down a bit sense i never really rev to 9k anyways. No sense in revving that high if im not making power.

Its stock besides i/h/e hondata and other misc bolt on's.</TD></TR></TABLE>

The stock transmission is designed to keep the motor in the max torque band with a quick shift at the car's tach redline in all gears.

With the improvements you have noted, I would lower the redline a little bit when it is convenient for you; however, there is no danger having the redline set at a real 9000. It's a generally accepted premise that the stock ITR motor is perfectly safe for redline shifting at 9000, and you should not be relying on the fuel cutout to tell you when to shift, anyway.

You're perfectly fine leaving the cutout at 9000 as sort of an emergency feature.

I'd like to caution you, too, that if you are judging the cutoff from the car's tach, your real cutoff is probably 8650 or so. If your cutout is set at a real 9000 RPM, then it will appear to activate in the car at a car tach reading of around 9400.

As you drive the car more the way it's currently set up, you can better judge whether or not you want to keep the redline there. A 9000 redline can help you carry a gear longer through a difficult turn, but on the other hand you definitely do not want to be hitting fuel cutout at 9000 RPM in the middle of a corner. You'll have your hands quite full controlling the car if that happens.

Ask me how I know.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">

Ask me how I know.</TD></TR></TABLE> HAHA great statement above grandpa

 

well, my tuner set redline at 9k, how-ever theres a problem with my hondata unit and the converted files so there isnt really a redline set at all yet, the chips says its set at 9k but when its installed and car is on there is no rev limiter, it wont save it for some reason

i get my msd back from MSD in a few days and im going to install that and use the rev limiter option on that box. Id prefer to have a higher rev limiter then what i shift at that way i can carry the car through the gears better and not worry about hitting the limiter. Ill have to drive it and get used to what the tach says sense there always in-accurate. I havnt tracked my car so i dunno what the sweet spot of the car is yet. "like what rpm is best for my powerband in 1/4"

ill probably just get a 8800 or 9000 rpm pill for the msd and call it a day. then i can see what shift point benefits the car's over-all 1/4 time with some on hand playing at the track. i just wanted to know for sure that the motor could handle a 9k shift so if i ever redline i dont damage anything in the process. Especially sense ill need to hit some redline shifts to see exactly how far off my tach really is. Ill probably do 8800rpm to be on the safe side. Without some valvetrain upgrades i doubt its gonna benefit a 1/4 time revving to 9k anyways.

thanks for the info

and i know some-1 is gonna say fix the hondata problem, i already talked to my tuner, he dosnt know what the problem is and he called hondata and they want me to send it in. its my daily driver so i cant really spare my car for a week or two for them to see what the problem is. It probably has something to do with converting the files sense i have an old hondata version tuned on new hondata software. the msd rev-limiter feature should work just fine

 

First off your tuner didnt set the redline, what he set was your fuel cut/rev limit. Redline is a term to describe the area on the tach that its advised not to go into (or not to go into too often) so unless your tuner scrubbed out the red and replaced it with white then it wasnt altered.

Rev limit or fuel cut on a stock JDM or USM or EURO ITR is 8900rpm but as said above it can show as 9100-9300rpm on the tach due to the inaccuracy of the tach at that level of RPMs. The redline on the tach is at 8400rpm. All ITRs no matter where they were sold are the same.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mugenracer &raquo;</TD></TR><TR><TD CLASS="quote">Rev limit or fuel cut on a stock JDM or USM or EURO ITR is 8900rpm but as said above it can show as 9100-9300rpm on the tach due to the inaccuracy of the tach at that level of RPMs. The redline on the tach is at 8400rpm. All ITRs no matter where they were sold are the same.</TD></TR></TABLE>

My tach has never read past 8800, and I beg to differ with your aquisition. 8399 is what i have seen in the books, Snap on timing light, and also an APEX VAFC. This isn't just some crap i pulled out of my ***, or a book for that matter either, i have live proof of this..LOL BTW: Nice Avatar man

 

I suspect mugenracer has seen this pic on another site when i asked this very same question as after a run out my rsm recorded this,



IMO the rev limit/fuel cut off is set at 8900

 

haha anybody can show a pic of a vafc with a fuel cut at any number...are you sure it's a stock ECU?...my 00' ECU showed 8399...and not just on mine either. A few other's to..

 

Its a standard jdm 96 spec ecu and the unit is a RSM , the fuel cut cannot be altered with a RSM its for monitoring purposes only. I only took the pic a week ago