480 bhp and 1360 kg Saab 9000 Aero
Discussion
xjay1337 said:
He's saying you will not have enough fuel based on the 630s for that power.
Who knows.
Either way it's pretty quick.
Given that then, the cams and bigger engine need 875s or even ID1000s to get the best out of them. Just a shame it struggles to put this much power down, let alone all that extra power.Who knows.
Either way it's pretty quick.
Nutty9000 said:
xjay1337 said:
He's saying you will not have enough fuel based on the 630s for that power.
Who knows.
Either way it's pretty quick.
Given that then, the cams and bigger engine need 875s or even ID1000s to get the best out of them. Just a shame it struggles to put this much power down, let alone all that extra power.Who knows.
Either way it's pretty quick.
Is there anything else you can do to improve traction? It sounds like it’s already well beyond useable power.
We're going round in circles here stating the same things over and over again.
I have seen just over 500 squeezed out of a GT3076, but that was flat out.
Your 2.4 litres is actually consuming the fuel and air the turbo is compressing, if it's demanding more than the injectors and turbo can supply then unless you fit larger ones thats it. That is why you see your boost pressure tailing off after a certain point as RPM increases - it simply can't keep up demand . Taking it to 3ltrs will only see a very similar power output....
Traction control in a high power fwd car is quite simple, as pointed out before fit a gear related boost controller then you can lower the boost in first and second, give it more or full boost in 3, 4 and 5 if it takes it.
There is no point waving your cock around saying you've got xyz bhp when you get beaten off the lights by a Micra.
I have seen just over 500 squeezed out of a GT3076, but that was flat out.
Your 2.4 litres is actually consuming the fuel and air the turbo is compressing, if it's demanding more than the injectors and turbo can supply then unless you fit larger ones thats it. That is why you see your boost pressure tailing off after a certain point as RPM increases - it simply can't keep up demand . Taking it to 3ltrs will only see a very similar power output....
Traction control in a high power fwd car is quite simple, as pointed out before fit a gear related boost controller then you can lower the boost in first and second, give it more or full boost in 3, 4 and 5 if it takes it.
There is no point waving your cock around saying you've got xyz bhp when you get beaten off the lights by a Micra.
I've got one of these which works really well on my Monaro. Shame they've stopped making it but they do come up from time to time second hand. http://www.racelogic.co.uk/index.php/en/racelogic-...
Also had it on my 300hp Fiat Coupe back in the late 90s.
Also had it on my 300hp Fiat Coupe back in the late 90s.
227bhp said:
We're going round in circles here stating the same things over and over again.
I have seen just over 500 squeezed out of a GT3076, but that was flat out.
Your 2.4 litres is actually consuming the fuel and air the turbo is compressing, if it's demanding more than the injectors and turbo can supply then unless you fit larger ones thats it. That is why you see your boost pressure tailing off after a certain point as RPM increases - it simply can't keep up demand . Taking it to 3ltrs will only see a very similar power output....
Traction control in a high power fwd car is quite simple, as pointed out before fit a gear related boost controller then you can lower the boost in first and second, give it more or full boost in 3, 4 and 5 if it takes it.
There is no point waving your cock around saying you've got xyz bhp when you get beaten off the lights by a Micra.
I don't think a gear-related boost controller is needed, it's mapped for 1 bar in 2nd gear then goes up to 1.7 bar in 3rd+.I have seen just over 500 squeezed out of a GT3076, but that was flat out.
Your 2.4 litres is actually consuming the fuel and air the turbo is compressing, if it's demanding more than the injectors and turbo can supply then unless you fit larger ones thats it. That is why you see your boost pressure tailing off after a certain point as RPM increases - it simply can't keep up demand . Taking it to 3ltrs will only see a very similar power output....
Traction control in a high power fwd car is quite simple, as pointed out before fit a gear related boost controller then you can lower the boost in first and second, give it more or full boost in 3, 4 and 5 if it takes it.
There is no point waving your cock around saying you've got xyz bhp when you get beaten off the lights by a Micra.
Nutty9000 said:
Ok but let's say a b234 2.3 with a GT3071r and no other mods will make 450 bhp.
This 9k is bored to 2.4, has a bigger inlet and more aggressive Maptun 268 cams.
Am I assuming that the above mods yield no extra power?
my understanding is that the heads have a total amount of flow no matter what size you take the engine to. all the other mods will improve the torque output and usable power/torque band and lower boost threshold massivlely,, cams really just assist to open up the powerband and allow better top end flow compared to mild factory spec camsThis 9k is bored to 2.4, has a bigger inlet and more aggressive Maptun 268 cams.
Am I assuming that the above mods yield no extra power?
Edited by Nutty9000 on Thursday 2nd November 22:35
the difference between ej20 and ej25 turbos on imprezas is that the 2litre will come on boost 1000 rpm later and lack maybe circa 100ftibs of torque on a decent size turbo - the 2.5 feels like a torque monster in comparison.. although peak bhp numbers will be very similar at the top end all assuming similar mods to each engine.
to really pull hard on that engine you,ll need something that flows a lot more air-maybe a gtx 3076(same turbine though but a much more efficient front billet compressor) - the next unit up the 35R will pull a LOT harder once its on boost but will lack maybe 80ft ibs at the lower end(the bit you drive most in)ie under 3500 to 3800 rpm but can easily crack 600 and the newest billet maybe heading past 650-serious numbers for a track car let alone a road car.
as i suggested earlier the gtx 3071 ver2 is rated at 550 or so but you dont nessarcarily have to run it that hard especially if you only want to sniff around 500 or so. it just flows a fair bit more air at any boost level compared to your current tubby-just gives a bit more scope for future tuning(if you even want that)
Scobblelotcher said:
Slightly off topic but your knowledge and posts are great bud, you really know your stuff.
I had Imprezas and tuned them over the years (up to 380 so on the lower end) and have an idea on this stuff but nowhere near your depth of knowledge/experience.
certainly no expert but i,m on my 5th impreza and my 3rd forged engined car -so i,ve spent a lot of time playing with them- been lucky really that for the last few years that they,ve been a 3rd car behind our daily and my van-I had Imprezas and tuned them over the years (up to 380 so on the lower end) and have an idea on this stuff but nowhere near your depth of knowledge/experience.
modern cars are insanely fast but completely insulated and isolated-a couple of hours in mine and i,m smiling ear to ear lol(and a little deaf).
mines in at the moment, having a few bits done to various bits and bobs.
Mikeeb said:
227bhp said:
But what gears does it spin the wheels in? Also, does the ECU know what gear you are in?
The ecu does a Calc between road speed and engine speed to work the gear out. So really all it should need is resetting to a lower boost threshold....
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