I'm having trouble increasing the rev limit on a Civic 2.0L (2005) with auto tranny,
piggyback is a GReddy E-manage Ultimate.

The goal is to increase the 6800 rev limit to 8500 rpm. Engine already modded to be able to
handle the revs... just can't get pass the ECU limiter

Anyone done before on their car (doesn't matter the brand),
please share knowledge/info/etc...

throw away the GReddy and get a standalone. Rev until engine pecah

Waiting for the release of the new Haltech Elite series.... but prefer to not use standalone if can be avoided

Google Hondata please...

Hondata not compatible.. already checked.. it was my preferred choice earlier.. but sadly, cannot use

if the stock ecu map only reach until 6800rpm, how is it going to know what to do above 6800rpm? Rev cut, as easy as it may sound, isn't as easy to 'remove' as speed cut. It depends how the ECU works. If the tables in the ECU really do go to above 6800RPM and is just limited by a soft cut, you may be able to remove it, but if the table only goes up to 6800rpm, the ecu literally doesn't know what to do above that RPM

And what is your reasoning behind NOT using a standalone? Any standalone is better than a piggyback, full stop.

This post has been edited by Nightstalker1993: Mar 21 2014, 12:00 AM

wow 8500rpm, upgraded valvetrain, stud bolts, con rods, main bearings, pistons?

Mainly cost and complications of getting it to work with the auto transmission.

Yes... and crankshaft, oil pump, etc..

lol civic fast car

LOL

Get a manual then. your gearbox is sucking 30% of your power

several years back maybe.. nowadays too many tebu-charged on the roads...


yeah... that's what everyone tells me..

Hope your auto trainny dont blow after the increase in bhp . Do note the rpm limit is not only for your engine but also your transmission . 8500rpm redline might just give it a shorter life span or just crack it sine it's not build for it .

P/S : your mechanic/workshop should have an idea right , on what to do to increase the rpm limit since they r the one who did the setup for 8500rpm red line . on an auto

This post has been edited by Noobi3: Mar 21 2014, 01:34 PM

straight go for fast car, Golf gti

Pretty sure that Hondata can do it, I am using Flashpro for my CRZ and I have a higher RPM cutoff.
However, as you have mentioned, looks like Hondata does not support your K20Z engine, have you considered doing a K20A swap instead?

Yes.. auto tranny part of the consideration... no track days.. just normal and occasional spirited driving.

A manual conversion is the backup plan if I do blow the auto tranny.

yes.. It's basically now all K20A internals... BUT.. a big but... the ECU is not compatible with any Hondata.. not even the Flashpro.

Sorry if i am giving the wrong info , have left the vtec scene a long time but isn't there a cpu upgrade u can use instead of stock with higher rev limit ? Eg Mugen , Spoon , etc . . . Or try looking at US brands , they should have it if the engine is the same as their Honda .

Nope.. the main issue is compatibility with the electronics required by the PCM since it's an auto.

Those that you mentions are for manual transmission.

I see totally no point to remove the rev limiter.
this limiter to protect the engine.
If u have high rev but the car move like turle.. no point at all.

unless your are refer to speed limiter..

Since u understood what I'm trying to say , try this . They might have it in auto since they offer auto to manual and manual to auto conversion reprogramming

This post has been edited by Noobi3: Mar 23 2014, 10:35 AM

Thanks for the link and suggestions.

Doesn't look like they have it for an OBD II whicb is what I'm having. Only for some OBD I.

I just found solution for you to bypass/remove RevLimiter.
I am a Unichip Q user on my GE8 Jazz...
Unichip is a Piggyback Brands which is same as Greddy E-manage but its have more features & on-going software update.
Recently looking for solution to increase my RevLimiter to and finally I found out the way to make it.
There's a unit call 'Intelligent i-Driver Module' by Unichip and its meant to be paired with Unichip Q Piggyback.
It has its own modern processor which will sync up with any Unichip Q series.
The unit will allows you to :


-Full factory injector control, ideal for aftermarket turbo vehicles running bigger injectors
-Drive extra injectors fully synchronized with the factory injectors
-Increase the on-time with easy one wire connections (no cutting)
-Increase the rev limit on vehicles where the factory ECU cuts the injector signals to control the rev limiter


Here is some of Prove of Review I just saw on Facebook of 'Gettuned' which is a famous Unichip Tuners based on Thailand

Jazz GE8 Japan AT Unichip + I-Driver
Link = https://www.facebook.com/media/set/?set=a.5...21053710&type=3

Here is some dyno prove video = http://www.youtube.com/watch?v=3TGtZoXaorE

The real problem is I cant find seller in Here selling the 'Intelligent i-Driver Module'.
But I pretty sure my tuners Chai from AutoEnginuity based in Shah Alam can trigger with the module to be tuned on our car.

The solution that I can see to get the 'Intelligent i-Driver Module' is by getting in online.

Done?

My plan is to go for standalone ECU. That will surely work since not required to use factory ECU anymore.

Your bigger issue will be to get the standalone ECU to control the auto gearbox
Alternative way is to run standalone for fuel/ignition etc but other control leave it to stock ECU

Yes, that's the plan

Auto gearbox PCM will still be factory ECU triggered.

Of course if doesn't work, then manual conversion.