[fiisch]

Does anyone else feel a drop in power if you go over 5,570rpm in first gear? Something similar sometimes happens in second, almost like you're hitting the rev limiter despite not being near the redline?

It doesn't bother me too much, but just curious as I noticed it whilst pulling away particularly aggressively over the weekend.

I read that some people on here had a problem with the engine mapping, but I think my problem is different as the engine only cuts out when it's near the limit. The traction control isn't cutting in, and I can't see any reason for the sudden drop in power.

 

[Maurgo]

Yes I notice it too, also in 2nd gear it seems to cut in?

 

[Dave Brand]

Take a look at the spec for your engine & see the engine speed at which max power is developed - it's probably well below redline!

 

[NickWarwick]

Me too - feels like the rev limiter kicks in even though red line hasn't been reached? Not a massive issue - torque's disappearing at that point anyway.

 

[tcy148]

Don't know about the QV. But I feel changing gear at 5000 instead gets the best power/torque out of the engine and thus better acceleration. i have the TB155.

 

[wo0dy]

Don't know about the QV. But I feel changing gear at 5000 instead gets the best power/torque out of the engine and thus better acceleration. i have the TB155.

2nd that :thumbs: TB155 aswell though

 

[Guest]

The rev limiter cuts in before the rev counter needle enters the redline . . . not very good really!

 

[iridiumX]

Don't know about the QV. But I feel changing gear at 5000 instead gets the best power/torque out of the engine and thus better acceleration. i have the TB155.

2nd that :thumbs: TB155 aswell though

i 3rd that. (is there such a term )

changing gear between 5000 and 5500 makes the exhaust pop! very addictive. :thumbs: i've the 155 too..

 

[Maurgo]

I agree with Dave B. Just that back in the day you could red line! But it is good to protect the car when ther is no more power anyway.

 

[Dave Brand]

I've just seen an advert for the QV. Max power is developed at 5,500 rev/min, so by 5,750 it will have dropped off noticeably!

 

[MrMongoose]

My personal opinion is that the needle on the rev counter has a slight delay to it. Probably less than a couple of tenths of a second, but it could explain why the power seems to drop off earlier when you're in 1st gear where you run out of revs so fast.

 

[Guest]

Rev limit is set lower on 1st gear.


It is on the 2.2s.....

 

[sandys]

Why is it set lower, I have the same problem on the Abarth, bugs me, I assumed like mongoose the rev counter was lagging in first two gears.

On a Dyno in higher gears I develop max power @ 6136rpm rather than 5500 quoted which ties into what i feel on the road really, which is that its all over by 6200.

The power cut in first seems odd, in second you can feel a soft limit, 3rd on will rev cleanly with no hesitation, I also noticed that if you rev the car slowly it will actually go all the way up in the early gears, its only an issue when you floor it which led me to conclude it was tacho lag.

 

[Guest]

Take a look at the spec for your engine & see the engine speed at which max power is developed - it's probably well below redline!

I've just seen an advert for the QV. Max power is developed at 5,500 rev/min, so by 5,750 it will have dropped off noticeably!

Just look at the power curve for turbo mitos......it peaks and then drops off before the red line. So you will all feel a drop in power as you go to the rev limiter. Its more pronouced in 1st and 2nd gear as the car accelerates harder from lower speeds/gears......

see: http://www.squadra-tuning.nl/autos/categorie/200/auto/72.html
(dutch site, graph lower down the page.....Other mito's power graphs are on the site as well. Just bare in mind one is standard and the other is a chipped reading.)

 

[tcy148]

Just look at the power curve for turbo mitos......it peaks and then drops off before the red line. So you will all feel a drop in power as you go to the rev limiter. Its more pronouced in 1st and 2nd gear as the car accelerates harder from lower speeds/gears......

see: MiTo 1.4 16v T-jet 155 pk, Alfa MiTo Benzine - Squadra Tuning
(dutch site, graph lower down the page.....Other mito's power graphs are on the site as well. Just bare in mind one is standard and the other is a chipped reading.)

That is an awesome site.
I am not at all surprised the 1.4TB155 pumps out 162 hp and 280nm torque! It has always felt faster than the quoted figures suggest.
That is pretty damn impressive from a 1.4!!

 

[Dave Brand]

Just look at the power curve for turbo mitos......it peaks and then drops off before the red line. So you will all feel a drop in power as you go to the rev limiter. Its more pronouced in 1st and 2nd gear as the car accelerates harder from lower speeds/gears......

That dip is in the "N" setting ("N-Stand, the red line). It's not there in "standard", the black line, or in the graph for the QV:

MiTo QV 170 pk, Alfa MiTo Benzine - Squadra Tuning

The QV graphs are interesting. The standard car (black line) only made 163 bhp; they comment that the claimed 170 bhp is probably done for marketing reasons to make the MiTo appear "better" than the 165 BHP Abarth Punto Evo!

 

[fiisch]

Phew thought it was just me...

For me, the power is about the torque anyhoo... 3rd gear 20mph pulling out to overtake a tractor, the torque nearly pulled me under the wheels of the bloody thing. 3200 miles and it still surprises me. Epic little car.

 

[Maurgo]

Can you read Dutch Dave B!? I cannot so cannot understand all the write up which may explain things too

 

[sandys]

The QV graphs are interesting. The standard car (black line) only made 163 bhp; they comment that the claimed 170 bhp is probably done for marketing reasons to make the MiTo appear "better" than the 165 BHP Abarth Punto Evo!

my APE made 181bhp and 200lbs of torque on the Dyno stock perhaps tesco 99 is doing the business here for me. Or I have been give the esseesse map by mistake?

Can you read Dutch Dave B!? I cannot so cannot understand all the write up which may explain things too

Google can help here

 

[Dave Brand]

Can you read Dutch Dave B!?

Enough to understand the gist of what's written!