Omega Owners Forum
Chat Area => General Discussion Area => Topic started by: TOOL on 14 April 2007, 07:53:36
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Hi all
I've had my 3.0 elite for a couple of weeks now,clocked up a 1000 miles in it,with no problems :)
Now this may seem strange ,as its quite quick,but I feel it has a lot more to give,performance wise and was wondering,what if any aftermarket performance mods are available.
Any advice would be helpfull.
Tool 8-)
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MTek chip - PM him
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Cheers will do :y
Am i right in thinking there is a limiter on the Elite as well,
May as well get all the dumb "Q's" out of the way in one go ;)
Plus better explain I'm a older guy not a youngster,so any performance gains neeed to be stealthy LOL,don't want to let everyone know I'm coming from 10 miles away 8-)
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Cheers will do :y
Am i right in thinking there is a limiter on the Elite as well,
May as well get all the dumb "Q's" out of the way in one go ;)
Plus better explain I'm a older guy not a youngster,so any performance gains neeed to be stealthy LOL,don't want to let everyone know I'm coming from 10 miles away 8-)
The only reasonably cheap thing to do is the chip, about £160. Improves top end, increases drivability mid range. Gains aren't huge, remember, normally aspirated, so not huge amount can be done from mapping point of view.
The manifolds are restrictive, but yet to find decent replacements. Not convinced decatting will improve matters much.
Silly induction systems seem to lower performance, but increase noise - so sounds like you won't want to go down that route.
Lastly, check your existing multirams are working. Fairly common for a problem with these, and they will affect performance.
BTW, no limiters on Omegas (other than the redline rev limiter).
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thanks for the info :y ,so basicaly leave it alone ,it's quick enough LOL ;D
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I am mulling over fitting a nitrous kit to the MV6 for a bit of fun... ;D
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COOL 8-) not where i want to go though LOL ;D
been down the ...err nut route to many times,260 bhp Eclipse,300 bhp R33 and a 400bhp WRX :)
want performance with comfort now LOL ;)
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I am mulling over fitting a nitrous kit to the MV6 for a bit of fun... ;D
Tiesto...nitrous Hmmmmmm :-/
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Hi all
I've had my 3.0 elite for a couple of weeks now,clocked up a 1000 miles in it,with no problems :)
Now this may seem strange ,as its quite quick,but I feel it has a lot more to give,performance wise and was wondering,what if any aftermarket performance mods are available.
Any advice would be helpfull.
Tool 8-)
In addition to what my co forumists are saying i would suggest that the best way to tune the 3lt engine is by doing the following mods. You need enlarged throttle/cams and mapping on a dyno by a person tha knows what he is doing. Chips are good but not good enough as usually they are modified standard maps and they are NEVER developed on a dyno. So eventhough you could get some extra performance you might actually strain the engine too much for no gain. For example in order to determine MTB(ignition timing point where the engine produces the max torque) ignition timing point for every throttle % and rpm increment you need dyno and a lot of time tuning. Having tuned engines myself i have found that for example on a rover K series you get 80NM with 3/4 throttle and 2000rpm at 20degrees BTDC ignition advance while remaining inside cylinder pressure limits while at 25 degrees the torque stays the same and the peak cylinder pressure goes sky high which on a long run will ruin the engine.
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which on a long run will ruin the engine.
Can a K series do a long run without popping the hg ;D
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which on a long run will ruin the engine.
Can a K series do a long run without popping the hg ;D
Depends what you call a long run - feet, yards, miles...? ;D
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which on a long run will ruin the engine.
Can a K series do a long run without popping the hg ;D
Depends what you call a long run - feet, yards, miles...? ;D
It is not too bad you know, a friend of mine is running 130bhp on his rover 200 rally car 1.4.
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Hi all
I've had my 3.0 elite for a couple of weeks now,clocked up a 1000 miles in it,with no problems :)
Now this may seem strange ,as its quite quick,but I feel it has a lot more to give,performance wise and was wondering,what if any aftermarket performance mods are available.
Any advice would be helpfull.
Tool 8-)
In addition to what my co forumists are saying i would suggest that the best way to tune the 3lt engine is by doing the following mods. You need enlarged throttle/cams and mapping on a dyno by a person tha knows what he is doing. Chips are good but not good enough as usually they are modified standard maps and they are NEVER developed on a dyno. So eventhough you could get some extra performance you might actually strain the engine too much for no gain. For example in order to determine MTB(ignition timing point where the engine produces the max torque) ignition timing point for every throttle % and rpm increment you need dyno and a lot of time tuning. Having tuned engines myself i have found that for example on a rover K series you get 80NM with 3/4 throttle and 2000rpm at 20degrees BTDC ignition advance while remaining inside cylinder pressure limits while at 25 degrees the torque stays the same and the peak cylinder pressure goes sky high which on a long run will ruin the engine.
right so it's not going to be a DIY job then
just an update decided to try to improve air flow by fitting a large cone filter and a direct cold air intake,these were originaly of my Skyline and were just lying about in the garage.
Well apart from a very nice noise can't see or feel any improvement LOL :)must be loud from outside as pedestrians keep turning round when I drive by ::) ,think the original air box will be refitted this 8-)weekend
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I've seen a 1.8 K series make 253BHP on an accurate rolling road. Not much of it was standard though. Certainly none of the moving parts! That was at circa 9,000 RPM by the way :o
They can be made reliable these days if you use something like a scholar conversion that keeps the liners located more accurately. Deep pockets required though.
I can't imagine a cone filter would improve the Omega much. The designers wouldn't have gone to all the trouble of fitting the multiram system only to put a restrictive airbox on it, and the air intake is right at the front, making best use of the cold air.
On my last car I rebuilt the engine and after a few weeks noticed a big drop in power once it had warmed up. I found some of the intake ducting had come apart so it was drawing air from the engine bay rather than the normal location in front of the radiator. As soon as the engine warmed up the radiator started flooding the engine bay with warm air. Do not underestimate the importance of a cool intake charge.
Kevin
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Do not underestimate the importance of a cool intake charge.
Which explains why I have always felt that my car runs better at night then!
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Do not underestimate the importance of a cool intake charge.
Which explains why I have always felt that my car runs better at night then!
Yes. I've noticed this too. My other car has the intakes poking out of a hole in the bonnet (it's a Westfield, not a Nova, BTW) and the difference between performance on a warm day and a cool evening is ... well, .. like night and day!
Kevin
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In addition to what my co forumists are saying i would suggest that the best way to tune the 3lt engine is by doing the following mods. You need enlarged throttle/cams and mapping on a dyno by a person tha knows what he is doing. Chips are good but not good enough as usually they are modified standard maps and they are NEVER developed on a dyno. So eventhough you could get some extra performance you might actually strain the engine too much for no gain. For example in order to determine MTB(ignition timing point where the engine produces the max torque) ignition timing point for every throttle % and rpm increment you need dyno and a lot of time tuning. Having tuned engines myself i have found that for example on a rover K series you get 80NM with 3/4 throttle and 2000rpm at 20degrees BTDC ignition advance while remaining inside cylinder pressure limits while at 25 degrees the torque stays the same and the peak cylinder pressure goes sky high which on a long run will ruin the engine.
errrrrrrm?????????????????.............could someone translate this into English for me please!! :-? ;D
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ran a cold air intake pipe direct from the front of the car into the end of the filter,so in theory it's getting plenty of cold air,when in motion,as I said sounds nice ...no improvement 8-)
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Always found damp misty mornings best, high air density or something.
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Cold morning are good, especially if you have a turbocharged car!
They were immense fun in the Saab! :)
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There is no such thing as an accurate rolling road, especially if you have the figures in flywheel (which is just a guess).
Also, tuning on the rolling road isnt ideal simply because you cannot reproduce real world conditions! a fan placed infront of the car on the rolling road will put air into the car at what, 30 mph? what about 70mph?
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There is no such thing as an accurate rolling road, especially if you have the figures in flywheel (which is just a guess).
If you guess at the losses of course your result will be a guess. If you measure them accurately using a coast down test and the dynamometer itself is calibrated you'll come close to the results you would see on an engine dyno.
Most rolling roads work on the "Guess" principle however, IME. Either that or the "tell the customer the figure he wants to talk about down the pub" principle.
The problem is, measuring power "at the wheels" isn't any good either because the figures are very sensitive to tyres, tyre pressure, weight on the rollers, etc. OK if you're comparing runs from the same car on the same day but not between vehicles.
I think rolling roads have their uses in tuning, especially when making comparisons between settings that the seat of the pants isn't sensitive enough to notice or when you need to be kicking out 200 odd BHP and tweaking a parameter at the same time. Having mapped a car solely on the road I wouldn't complain if someone gave me a rolling road. There's only so long you can spend at 200 BHP on the A31! Then again, map a car on the rollers and you'll need to finish it off on the road.
Cold morning are good, especially if you have a turbocharged car!
In a Turbo you've got the double whammy of cold intake air to the compressor and an intercooler / chargecooler working really well too!
Kevin