RPM Limit on a GTE

[Funkdocta]

Hi all,

Does anyone know how you can remove or raise the RPM limit on a Nova GTE? I'm pretty sure it's a chip built into the ECU but there must be a way of removing it??? What's the cheapest mapable ECU I can buy coz i've heard these have raised RPM limits?

Cheers everyone

[Will F]

Whats the point in removing a device which stops you fecking your engine up?
You will gain nothing from removing it. Peak power on a GTE is approx 5250- 5600 rpm.

[Dpnova]

wheres the gte limiter set at :?

[Stuart]

find out ;) lol

[Dpnova]

I cant find it lol

[Stuart]

try harder, right foot down to the floor wihle driving lol

[Dpnova]

i dont like to push her that hard but ive reved it quite high but i still cant find it

[Will F]

Should be at 6250 I think.
That GTE has no limiter! lol

Had her up to 7000! :wink:

[Aragorn]

6800 is stock limiter and afaik all injected engines will have a limiter

if ur brave enough floor it in neutral :D

gte appears to use hard cut at 6800 so it sounds rather rally schlag ;)

[Dpnova]

ive gone past 6800

[elsey197]

Ive never found the limiter in mine either :? and ive reved it as far as it will go :?

[Adam]

Nothing to do with this topic, Elsey did you smooth your GTE rear bumper your self or did a bodyshop do it. How much did it cost you.
My mate has a 1.2MK1 merit and wants a GTE rear bumper but don't like the lines etc in it.

[Dpnova]

Should be at 6250 I think.
That GTE has no limiter! lol

Had her up to 7000! :wink:

Dont say that, i know you didnt really abuse my baby lol

[cooper_nova]

my mate astra gte 8v don't have a limiter on it(its a g plate) took up to 7000rpm in 2nd :o
:lol: :lol: :lol:

[Ste_Nova]

my 2.0 16v revs to 7250 :lol:

[Snowface]

Ive never found the limiter in mine either :? and ive reved it as far as it will go :?

there is your limiter for you then. lol.

when u say as far as it will go, did it blow up?

[-Bruce-]

my gte has a limiter but not sure what it goes too, but i would think as soon as the needle goes into the red!! but the max power is at 5600.

bruce

[Funkdocta]

Well, my engines been tuned with larey cams etc etc and the rolling road results are 112BHP @ the wheels @ 6100 RPM which i've been told is bloody high for your peak power and if I raised the RPM i'd get a chunk more performance! Mt limiter kicks in around just under 7k but the car just wants to rev more. ------- How did u get your 2.0 16v to rev to 7250? Cheers all

[-Bruce-]

if your engine has its peak power at 6100 then you want to change at that engine speed!! so you dont want to rev any higher than this is you have performance in mind. as after this engine speed your power will fall, as you will see in the print out you got from the rollers.

bruce

[Funkdocta]

yeah true, it does slope off but only very slightly, barely at all compared to the slope on the incline upto the peak power, so surely it would make a lot more sense to use this power so that I could get a lot more usage from my gears??

I just wanna know how to up it really, or remove it and get an omex limiter. I'm guessing no one knows how to do it, only thing I can think of then is carbs?

There MUST be a way to remove the RMP limiter on the cu of a GTE!!!! I don't mind paying??? PLEASE!

[Will F]

There is NO point! :?
If you have been told it peaks at 6100 (which seems high for an 8v) then there is no point in revving any further!

That figure seems a 'tad' optimistic also. Thats like 130 bhp! Hmmmm.

[Aragorn]

will thats crap

hes just said the graph stays flat after 6100 but is heavily sloped before 6100

shifting at 6100 will mean he isnt using all the available power - think area under the graph = accelleration

if u can keep the engine in a zone with more area under it then it will accellerate more and in his case that means taking it to the rev limit

[Gazza14SR]

My gsi engine has a limiter.

Its cool with a digi dash cuz when it reaches the redline and starts to limit the whole digi dash flashes at you lmao!

[_JH_]

even if the power did slope off slightly after its peak, you have to bear in mind where abouts in your power curve your gonna land when you change gear. obviously this depends on engine spec and gear ratios, but if hangin on past the peak power a little bit means you hit the next gear at a better rpm, and the loss isn't too great by hanging on, then you do it. its a pro/con situation

hope that makes sense. i know what i mean lol


gte appears to use hard cut at 6800 so it sounds rather rally schlag

my GTE did that, and my (early) GSi does it aswell, real passenger pleaser :lol:

[Funkdocta]

Yeah I see what ya saying and that's exactly why I wanna bit more RPM, my gearbox is a standard GTE box, but nearly everything else on the engine is uprated - Also why is 'Will F' saying 112BHP@ the wheels is a tad optimistic? Surely this measurment isn't far from uncommon with a well tuned GTE engine??? I have 1mm overbore, skimed head (not sure of ratio) lightened and balanced bottom end (con rods, crank), pistons with higher oil flo, lightened n balanced fly wheel, big ass cam (can't remember what degree), 4-1 manifold with hi-flo stainless zorst, K&N and all the other usualls.

Anyway.........

HOW DO I REMOVE My REV LIMTER?

Oh and thanks Aragorn, spot on.

[Jim]

I still fail to understand why you want to remove the limiter? It's there for a reason. You won't get any more power out of the car unless you have a highly tuned engine with twin carbs or throttle bodies. Take a look at some of the cars on the site. For example, Dan's 1.6 is tuned a lot more than yours and has twin 40's yet his limiter is set to 7k because thats where the peak power is.

Leave it as it is, otherwise you'll risk blowing up your engine.

Jim

[nam]

i'm not too clued up on this but surely IF there is more power (proven by the RR) after the standard GTE rev limiter then you should higher it, but on the other hand if is peaks at 6100 and the limiter is aprox 6800 then there is still 700 rpm left before it hits it(is this not enough?).

i think you should scan then graph up on to here so we can look properly weather its worth all the changes.

as for your origianal question i dont know lol sorry.

cheers nam :lol:

[m.d.]

the default setting on my shift light was set just under 8000 on my 2.0 8v when i put my carbs on for the first time (never had a limmeter then)
i was having a play with a porche once and the light came on. lol

was waiting for a rod to end up on my lap lol

[Dan]

my peak power is at 6257rpm, a 7k rev limit is ample and i never take it right to the limiter as no need, thats what torque is for. I see you have 'claimed' your power which is fair enough if the printout says so, although it does mean diddly as i quote low figures for mine by the graph method as velos read low generally (accurate). r/r cant be trusted as they vary so wildly its unbeleivable.

An example of this is a certain company in bristol quoted me 119lbft and 139bhp fly, i then went to velos (who i use now), i had abit more done to the engine and they could only get 120lbft and 120bhp as my ignition was completely wrong, although it was the same ignition as when done before with a milder engine. The original figures were over by 19bhp so i know where to go to if i want a high power figure and proof lol, although its performance speaks its own words and power figures arent needed.

What are your torque figures like as on the gear change you want to be within a good torque area to keep pulling. To echo what was said put your graph up so peeps can see what you are trying to say.

[Funkdocta]

Ok, the torque bit does make sense. I know what you mean about the rr figures varying to, what I think i'll do is get them done again somewhere else and compare. In the mean time i'll try n get the print outs scanned for this post so u can let me know what ya all think...... setting the figures aside for a min, I still just get that feeling that as I'm ploughing through the gears on a straight, the car is still really pulling hard and bang the limiter kicks in or blips so I hit the next gear. I would just like to hold it that little bit more, even if it's just for a day to see where the power starts fading again (and where my c rods shatter :lol: ). Gonna get me some dirty great carbs soon hopefuly anyway if/when I get some doe.

Changing the subject for a min, 'Carbs the cheap way' has anyone ever stuck 2x SR carbs on a GTE? I can make an adaptor plate my self - has it been done are these the right carbs to use? Ta

[Dan]

The carbs for the job would be twin 40 webers or dellorto's. Again it would be advisable to use a r/r that know how to set them up properly (daft but you'd be suprised).

Dont worry about getting the car tested elsewhere, it would be a waste of money. Noone truly believes figures anymore due to the crap figures they have dished out for so long. If it feels right and goes like stink then that'll do lol.

Why dont you fit a shift light to operate right before the limiter, then go out using the shift light each time when changing, you might be suprised how the car behaves if you change exactly right each time.

[Snowface]

the standard gsi has 100bhp at the flywheel. So 112@wheels would be about 120-124@the flywheel.

Will F, If your power doesn't really kick in until 4500rpm then changing at 6100 will take you down below this, where there is very little power.

So taking it past the peak power to about 6500 you will still be getting a lot of power and when u change gear u will land slap at the start of the power band.

[Dan]

yet again you surpass yourself snowface, please comment on things you might know something about. Just for the record i "qoute" for the sake of it 113@wheels and 142 fly for bhp figures when asked. according to your misleading info i must have atleast 128bhp which wouldnt put me into the same class as standard valver nova's :roll:

your last comment was somewhere near tho :wink:

[Funkdocta]

How do u work out the BHP figure from Fly to wheels and from wheels to fly? I heard it about 26% loss from the fly to the wheels?

[Snowface]

ok so my figures are not right but the theory behind them is correct.

I was just trying to explain the difference as noone else on this topic had done so.

[Stuart]

the standard gsi has 100bhp at the flywheel. So 112@wheels would be about 120-124@the flywheel.




i want a magic gearbox like yours :D

[dathers]

As said above,theres no point in revving a standard GTE that high anyway,the next gear up will see you accelerate more.
Dave

[Funkdocta]

How do you work out the difference between fly wheel BHP and @ the wheels anyone?

[rikih]

my gte had no limiter either the thing went off the clock lol :D :D

[Funkdocta]

The limiter wont kick in untill it's just about off the clock! If ya stick ya Nova in Neutrel and put ya foot to the floor the car should rev upto about 7000 RPM (Redline) then make a poping juddering sound and wont rev up anymore - that's the limiter. If your Nova hasn't got a rev limiter (i.e if you've got carbs - not injection) and you do this the engine will just keep on reving and then blow up eventually! I've not heard of an injection engine (factory) that hasn't got a Rev limiter at around 7000 RPM.