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[theolodian]

I've run a modified turbo sedan to well over 200K, including track time.  The turbo at least was reliable.    The question is your price range.  For the price of a cheap Omega, you are not going to get a reliable turbo sedan.  They can be death by a thousand paper cuts more than even a bad Omega.  All of the rubber hoses go brittle due to the higher engine bay temps, manifolds crack, exhaust studs go, and on and on.  However, there are several options;  Sierra, Audi, Volvo, etc.

You can quickly get to the point where it is cheaper and more enjoyable to have two cheap cars instead of one highly modified one.  Do a few things to the Omega, then have another project car more for your individual enjoyment.  Trying to run one highly modified jack-of-all-trades can be very expensive and frustrating.  By the end, I realised that it was cheaper to buy a fancy and fast new car!

On the subject of drilled airboxes, they are the opposite of a cold air intake and usually reduce real world power.  They can give false improvements on the RR if you have the bonnet up or have the fan pointed directly at them.

[Marks DTM Calib]

I would say, do the cheap mods listed  (i.e. cams) and see what you think....if its not enough get a small block chevy and drop it in.........

[theolodian]

To be honest, the Omega is well enough balanced so that the LSD does very litle unless its mega slippy...

And that's when I wouldn't want one!  I don't miss it.

[Essex_Andy]

TBH I think my wifes 1.6 Festa is quicker off the line than my 2.5 at the mo.

However I intend to fit 3.0 cams, probably will go for a FSE reg (had them on my 2.9 4x4 sierra and on 1.9 205GTi and found them to be worthwhile) and got plans to decat the exhaust. Its got an almost new exhaust system on it but the powerflow agent's in Bromley are excellent. I will get them to fabricate some decat pipes. One problem I have at the moment is the full length heat shields on the downpipes..they are starting to rattle and annoy me...looks like I'll ask the powerflow people to blob a weld or two on the fix them up,

Then go for the chip..I'm hoping for just the other side of 200 brake

[Darryl Flynn]

has anyone got any suggestions for tuning a 2.5V6?

i have lpg fitted, so fuel related mods are not much good

also, i have limited funds at the moment, so the cheaper the better ideally!!!

thanks,   stu 8-)

Why Bother?
If you want a fast car buy a fast car!.
You could spend a fortune on an Omega and it will never be a GENUINELY fast car.
If you have a limited Budget and want speed buy a Saab 9000 Aero. SERIOUSLY quick even as standard!

[Marks DTM Calib]

has anyone got any suggestions for tuning a 2.5V6?

i have lpg fitted, so fuel related mods are not much good

also, i have limited funds at the moment, so the cheaper the better ideally!!!

thanks,   stu 8-)

Why Bother?
If you want a fast car buy a fast car!.
You could spend a fortune on an Omega and it will never be a GENUINELY fast car.
If you have a limited Budget and want speed buy a Saab 9000 Aero. SERIOUSLY quick even as standard!

Yes but, lacks the handling and ability to put the power down!

[EddieX]

Shoot me down in flames if I'm wrong, but isn't the Saab based on a Vectra floorpan and mechanicals?

[theolodian]

Shoot me down in flames if I'm wrong, but isn't the Saab based on a Vectra floorpan and mechanicals?

I think that's only the 9-3.  The old 9000 only had a few GM bits, like the auto tranny where the o/d would eat through the end of the casing and come out the n/s wheel well.  :-?

[Darryl Flynn]

Shoot me down in flames if I'm wrong, but isn't the Saab based on a Vectra floorpan and mechanicals?

Yes your WRONG as far as the 9000 goes

[Darryl Flynn]

has anyone got any suggestions for tuning a 2.5V6?

i
Why Bother?
If you want a fast car buy a fast car!.
You could spend a fortune on an Omega and it will never be a GENUINELY fast car.
If you have a limited Budget and want speed buy a Saab 9000 Aero. SERIOUSLY quick even as standard!

Yes but, lacks the handling and ability to put the power down!

Mark i have had three 9000 Aero's over a long period of time and 22 years on Police Traffic so know all about the best that Vauxhall has to offer. I doubt if many people on here have been as fast in an Omega, other than those currently on, or  ex Traffic.
Believe me a standard 2.3 Full Pressure Turbo  Saab 9000 , NEVER MIND an Aero will totally outrun ANY STANDARD Omega across country on any road.
I base these comments on  on personal experience. What do you base yours on?

PS . You might ask, why did i change to an Omega Estate from the Saab ? They cannot be beaten for value for money, comfort and load carrying. Love mine to bits.

[Marks DTM Calib]

Having driven both at speed around the twisty bits, I couldn't even hope to get a 9000 or even the Aero through the bends as well as the Omega in sports trim, the 9000 might have more bhp but, the chassis flex can be felt and the under steer is very difficult to hide despite the Aero suspension which only holds on until the last minute before letting go very quickly.

[Darryl Flynn]

One mans meat, another mans Poison.

Cannot help but totally disagree as to which  is the better FAST road car for everyday use.

As Laidback said, the Omega is superb at what it was designed for a lazy, comfortable mile muncher. Fast A to B car on normal roads, NO give me the Saab anyday.

[theolodian]

One mans meat, another mans Poison.

Cannot help but totally disagree as to which  is the better FAST road car for everyday use.

As Laidback said, the Omega is superb at what it was designed for a lazy, comfortable mile muncher. Fast A to B car on normal roads, NO give me the Saab anyday.

It depends on the driver, what type of car you are comfortable hustling, cornering style, whether you know the roads well, and how much you really push cars.  For instance AWD is rarely the 'fastest' in a pure sense, but it is usually very forgiving and can allow a medium talent driver to do a good turn of speed on unfamiliar roads.  

The Omega can really hustle on the twisties if you give the suspension enough time to take a set and you are smooth.  Me, I'm not comfortable pushing cars that are not a little forgiving on open roads.  You never know what you might come across in the middle of the turn.  Even then I don't push them to where I'm in trouble if I come across a bicyclist or something.  It's just not worth the risk.

[Martin_1962]

Since you have LPG scrap the FSE vavle idea and also find your highest octane petrol you can find locally and when you get it chipped state you will never go under 98 99 97 or whatever.

Consider upping compression ratio.

Gas doesn't detonate like petrol so some tuning tricks can work well (search the internet) and some LPG adapted engines hate petrol, my car now runs better on LPG.

Unfortunately 2.6 can't be chipped

[Admin]

Well this is generating some healthy debate... but let's please keep it friendly guys!

Darryl, I am afraid I have to agree with Mark right now.

I recently got a (very nice) 2.3 CS Carlsson.

DAMN it is seriously quick!  
In a straight line the acceleration (once out of first!) is immense. For overtaking this car is awesome.

Alas, round twisties a manual MV6 will out handle it easily. I am in the fortunate position of having both outside to directly compare.

However, in a few months, once I have replaced all the shocks and springs and uprated the ARB bushes it may be rather different!

It has to be said though, the Aero has the best seats in a car I have ever come across. 

rhydv6. No turbocharged cars are not unreliable at all.
It is down to the engine design (was it designed with turbocharging in mind, or bolted on later in production) and proper maintenance.

Saab for instance, have been making turbocharged cars for a long time and the engines are generally very reliable if you maintain them properly. The mileage they attain is testament to that fact.
Actually with Saabs, turbo problems are well down the list of things to go wrong...