Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: whitebullet on 15 October 2009, 22:05:21
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ive been thinking about having my omega remapped, is it worth it?, what sort of gains will i be looking at and will the mpg be any worse :-/
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would not know but would think it not do any thing. unless you wont to go racing.
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Its said a good chip should give you approx 10% extra bhp and slightly better fuel economy :y
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good chip :question
who on here has chipped there 3 ltr :question
might be something i would be interested in :y
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I don't think you would gain much in the way of BHP/torque, if anything it will be small. But what you will find is that they can optimize your ecu to match your engine and that should make a lot more driveable, you should find it pulls better through the range with reduced flatspots.
However for the cost of a remap, you need to make sure that you have finished modding everything else. IE air filter/exhaust/fpr etc; Or you would need to get it remapped again afterwards.
In my honest opinion, you'd gain more (driveability) from sticking a lightened flywheel in, rather than a remap. Although I'm not sure what is available for the MIG in that area.
It all depends on what you end goal is, how much you want to spend and how long you are keeping the car from.
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Im with Pete,
gives better smoother rev range, and a little more power,
or if driven the same, a little more economy.
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good chip :question
who on here has chipped there 3 ltr :question
might be something i would be interested in :y
I've had a couple of chipped 3.0, I does feel quicker but I can't prove it was. A good chip is not one of the cheap ones off Ebay, I paid Ł130 for the first one which was from Mtek.
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The chip in mine seems to come in around 4.5k rpm. It claims to give around 10% extra high up the rev range, not been on rolling road to prove (and its an auto, so result would be wildly inaccurate). Below 4.5k it doesn't appear to do anything performance wise, reckon may be a marginal mpg improvement
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guy with the light blue facelift had his remapped didnt he?... cant remember the username though lol
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slightly off topic i know but ............. in years gone by, a pretty good upgrade to a modified engine was too uprate the ignition coil. ( better / stronger spark ) :y
has anybody ever heard of anything like this on a miggy :question
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slightly off topic i know but ............. in years gone by, a pretty good upgrade to a modified engine was too uprate the ignition coil. ( better / stronger spark ) :y
has anybody ever heard of anything like this on a miggy :question
I've asked this before and was told the ignition coil etc on the v6's is good enough as it is and not enough of gain to warrant the expense.
Having said that the older saab's had a normal and red top variation and the red top coil packs where supossed to be better than the standards.
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do i remember right that the exhaust manifold on the 2.5 / 3ltr v6's is a bit of a weak spot :question
something about the 2.6 / 3.2 ltr ones are better :question
anybody swaped theres :question
any diferance :question
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slightly off topic i know but ............. in years gone by, a pretty good upgrade to a modified engine was too uprate the ignition coil. ( better / stronger spark ) :y
has anybody ever heard of anything like this on a miggy :question
I've asked this before and was told the ignition coil etc on the v6's is good enough as it is and not enough of gain to warrant the expense.
Having said that the older saab's had a normal and red top variation and the red top coil packs where supossed to be better than the standards.
Correct, the DIS setup gives out the best part of 45KV thanks to the modern electronics sat behind it (older points based systems struggled to achieve 25KV) so little room for improvement here.
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do i remember right that the exhaust manifold on the 2.5 / 3ltr v6's is a bit of a weak spot :question
something about the 2.6 / 3.2 ltr ones are better :question
anybody swaped theres :question
any diferance :question
Its no good and yes the, the 2.6/3.2 manifolds are a pressed steel affair (earlier are a rough casting) so much better.
I seem to recall that Markie Mark has some fitted to his and LooKnee was considering it to
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do i remember right that the exhaust manifold on the 2.5 / 3ltr v6's is a bit of a weak spot :question
something about the 2.6 / 3.2 ltr ones are better :question
anybody swaped theres :question
any diferance :question
Its no good and yes the, the 2.6/3.2 manifolds are a pressed steel affair (earlier are a rough casting) so much better.
I seem to recall that Markie Mark has some fitted to his and LooKnee was considering it to
And I might have a spare 2.6 set in my garage, assuming the guy on wanted thread doesn't buy them.
Sorry for the shameless plug.
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If you've got a strong enough spark to ignite the fuel reliably the ignition system won't make any odds to power output.
Also, remember there is a world of difference between a "remap" and a "chip" although one is frequently sold as the other.
A remap, in my mind, involves getting your car on the rollers and tweaking it live to optimise the fuel and timing maps before burning an EPROM for your specific engine.
A chip is a one size fits all chip not specific to your engine. It will probably just remove some of the manufacturer's safety margin in terms of ignition advance.
Either way, when tuning a normally aspirated engine, don't expect a chip alone to give you a spectacular improvement.
Kevin
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If you've got a strong enough spark to ignite the fuel reliably the ignition system won't make any odds to power output.
Also, remember there is a world of difference between a "remap" and a "chip" although one is frequently sold as the other.
A remap, in my mind, involves getting your car on the rollers and tweaking it live to optimise the fuel and timing maps before burning an EPROM for your specific engine.
A chip is a one size fits all chip not specific to your engine. It will probably just remove some of the manufacturer's safety margin in terms of ignition advance.
Either way, when tuning a normally aspirated engine, don't expect a chip alone to give you a spectacular improvement.
Kevin
And ths is where I struggle with the benefits on moern cars as the ECU's are adaptive thansk to the use of knock sensors and O2 sensors.
What most of the chips do is up the fueling on WOT (and not much more!)
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And ths is where I struggle with the benefits on moern cars as the ECU's are adaptive thansk to the use of knock sensors and O2 sensors.
What most of the chips do is up the fueling on WOT (and not much more!)
Indeed. WOT fuelling is the only place that isn't adaptive since there is no Lambda feedback. Not sure if there's knock control under all speed/load conditions but given its' presence the ignition map is unlikely to be overly conservative.
Unless you buy a TVR, of course, where, despite developing their own engine, they failed spectacularly when it came to mapping it. Their only consideration appears to be what it sounded like on the overrun. ::)
Kevin
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And ths is where I struggle with the benefits on moern cars as the ECU's are adaptive thansk to the use of knock sensors and O2 sensors.
What most of the chips do is up the fueling on WOT (and not much more!)
Indeed. WOT fuelling is the only place that isn't adaptive since there is no Lambda feedback. Not sure if there's knock control under all speed/load conditions but given its' presence the ignition map is unlikely to be overly conservative.
Unless you buy a TVR, of course, where, despite developing their own engine, they failed spectacularly when it came to mapping it. Their only consideration appears to be what it sounded like on the overrun. ::)
Kevin
I can confirm that alright! My cerb went from 363 to just over 400bhp after a decent tune up on a rolling road. It has since had some more engine mods so needs to be rolling roaded again.
As far as the omega is concerned I have noticed flat spots on mine but they are not always present.
Have you tried running it on V-power or Tesco 99ron? These fuels make a big difference to performance on the mig, its almost like having a remap! I won't run my cars on anything else.
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Is the 3.2 manifold onto a 3.0 a straight swap? If not what work is involved?
How big are the benefits? Might think about doing this while I have the heads off the car.
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Is the 3.2 manifold onto a 3.0 a straight swap? If not what work is involved?
How big are the benefits? Might think about doing this while I have the heads off the car.
iirc you need to remove the SAI system as well.
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Is the 3.2 manifold onto a 3.0 a straight swap? If not what work is involved?
How big are the benefits? Might think about doing this while I have the heads off the car.
iirc you need to remove the SAI system as well.
I have already removed that anyway so that won't be a problem. I assume all the studs are the same etc and nothing needs changing on the heads?
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You have to cut 5-6mm off the flange at the top of the front pipe that the gaskets fits over.
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I had my car rolling roaded about 5 months ago, have a few toys under the bonnet...
The bloke that did the work told me that the best mod i had was my 3.8 fpr.
Modifying the fuel flow on a mig is just as good as a remap, as all the remap on a mig will do is tell the car to use more fuel. :y
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I had my car rolling roaded about 5 months ago, have a few toys under the bonnet...
The bloke that did the work told me that the best mod i had was my 3.8 fpr.Modifying the fuel flow on a mig is just as good as a remap, as all the remap on a mig will do is tell the car to use more fuel. :y
In which case he didn't have a bloody clue what he was talking about ;D ;D
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I had my car rolling roaded about 5 months ago, have a few toys under the bonnet...
The bloke that did the work told me that the best mod i had was my 3.8 fpr.Modifying the fuel flow on a mig is just as good as a remap, as all the remap on a mig will do is tell the car to use more fuel. :y
In which case he didn't have a bloody clue what he was talking about ;D ;D
I concur. All a higher pressure regulator will do is reduce the injection durations.
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so basically, he talked himself out of a sale then?
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so basically, he talked himself out of a sale then?
Quite possibly.
By raising the fuel rail pressure you simply reduce the period of time the injectors need to be open for.
The Motronic setup adapts to changes and because it has closed loop control, will learn some new adaptive values around the higher fuel pressure and nullify any change!