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Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you.

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Old 15th April 2010, 20:51   #121
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they tail off because you come off the power :L fool
The reason people come off the power is because the engines power has stopped going up hence the PEAK...

lol
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Old 15th April 2010, 20:52   #122
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so you tune engines yet copy and paste from google?

As we keep saying, if the cam profile is making peak rpm at say 5.5k what good is an 8k limit and how is the car going to gain extra power after it has peaked at 5.5k? please explain

you would run a higher rpm peak cam
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Old 15th April 2010, 20:54   #123
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if the limiter of a vtr was at 3k rpm it wouldnt be 100bhp, it would be less, alot less,
backing off the limiter runs the engine closer to niping up as most internal botom end mods do but acheiving more bhp as the engines having to work harder for instance 1500 rpm harder

So ur all sayin thats wrong :L
But the limiter isnt 3k is it, its above where the PEAK power is allready.

Hence why increasing the limiter on THIS engine to say 8k wont yield extra power as you have allready peaked.

Its like sex, once you have come performance goes down
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Old 15th April 2010, 20:54   #124
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Old 15th April 2010, 20:55   #125
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you would run a higher rpm peak cam
Which is different to simply just increasing the RPM of the limiter isnt it

What happens if you change the cam to one that peaks at 7k would you run 10k limit? so the extra 3k can gain all this power?
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Old 15th April 2010, 20:56   #126
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ok then gt a car dyno ran standerd then again without a limiter, weel c whos rite then yer?
We certainly will... when it goes boom and pisses oil all over the shop.

Here's a suggestion: get your 1.1 on the dual carriageway and up to a steady cruise. Then drop it back into 1st gear - following your logic, all will be gravy as cars don't need rev limiters... right?
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Old 15th April 2010, 20:56   #127
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But the limiter isnt 3k is it, its above where the PEAK power is allready.

Hence why increasing the limiter on THIS engine to say 8k wont yield extra power as you have allready peaked.

Its like sex, once you have come performance goes down
is this whole post not about changing the cam?
so it wouldnt be a standerd engine, a higher peak power cam along with the limiter backed off will increase bhp
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Old 15th April 2010, 20:58   #128
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We certainly will... when it goes boom and pisses oil all over the shop.

Here's a suggestion: get your 1.1 on the dual carriageway and up to a steady cruise. Then drop it back into 1st gear - following your logic, all will be gravy as cars don't need rev limiters... right?
Back off the limiter not take it away u mug
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Old 15th April 2010, 20:58   #129
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cammed 1.1 wins end of..
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Old 15th April 2010, 20:58   #130
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is this whole post not about changing the cam?
so it wouldnt be a standerd engine, a higher peak power cam along with the limiter backed off will increase bhp
but you keep posting that the rev limit is whats limiting the power, when its not its the cam profile.

Not all cam profiles are that wild to even justify a higher RPM from the engine, surely as a tuner you would know that cam profles are different and that every set up will be different according to this and the mapping
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Old 15th April 2010, 20:58   #131
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plus it wouldnt go into 1st gear at that speed anyway
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Old 15th April 2010, 20:59   #132
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Saxspeed, you don't have a clue what you're on about, you can't even word things convincingly.. fuck off and stop wasting everyones time
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Old 15th April 2010, 20:59   #133
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Back off the limiter not take it away u mug
That's not what you said...

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ok then gt a car dyno ran standerd then again without a limiter, weel c whos rite then yer?
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plus it wouldnt go into 1st gear at that speed anyway
I beg to differ.
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Old 15th April 2010, 20:59   #134
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plus it wouldnt go into 1st gear at that speed anyway
Why not?
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Old 15th April 2010, 21:00   #135
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but you keep posting that the rev limit is whats limiting the power, when its not its the cam profile.

Not all cam profiles are that wild to even justify a higher RPM from the engine, surely as a tuner you would know that cam profles are different and that every set up will be different according to this and the mapping
no what im saying is once fitted a diff cam, eg. higher peak power cam, backing off the limiter u will gain more bhp than a 6000rpm peak power cam
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Old 15th April 2010, 21:01   #136
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no what im saying is once fitted a diff cam, eg. higher peak power cam, backing off the limiter u will gain more bhp than a 6000rpm peak power cam
thats again dependant on the cam profile though and not simply bunging the limit higher.

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Old 15th April 2010, 21:01   #137
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omg too confusing i think someone has cammed your brain with a load of babble saxspeed
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Old 15th April 2010, 21:02   #138
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Why not?
You wana prove to me that you can put ur car into 1st gear at cruising Dual Carageway speed?
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Old 15th April 2010, 21:03   #139
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plus if you can get the ecu limiter removed or backed off a higher singing engine will preduce more revs obvuisly increasing bhp
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no what im saying is once fitted a diff cam, eg. higher peak power cam, backing off the limiter u will gain more bhp than a 6000rpm peak power cam
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Old 15th April 2010, 21:04   #140
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thats again dependant on the cam profile though and not simply bunging the limit higher.

Bingo. I fitted a Kent cam to my VTR and it still made peak power well before the limiter.

I wonder what the standard valve springs in a 1.1 look like at 9k revs.
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