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[miniator]

...as i formulate plans in my head and begin to save money for "go faster" goodies...what should i be aiming for?!

Currently im at 232bhp with a Remus backbox (two middle boxes removed).
The list of further mods i have in my head are...

Mantzel Powerbox
Panel Filter OR a cone enclosed in the OEM airbox (this worked well with my old honda)
More direct and bigger cold air feed into the airbox
Enlarge throttle bodies
Courtnay Cams
Dastek Unichip
Much further down the line...Eaton Supercharger, but im only worried really with N/A tuning at the minute.

Ive also considered Sports CAT's/de-cat but which suits the x30xe best...i dont want her any louder than she is!
Ive also heard of getting custom made exhaust manifolds...bigger ones as these are restrictive. Ive only heard myabe 3 people say this so im not sure.
Possibly a lightened flywheel!?

With those mods would 300bhp be possible!?

[Big Sye]

some nice ideas there.  would be great to see it at 300bhp.

[Kevin Wood]

No way will you see 300 BHP without forced induction.
Even then you'll have to extensively modify the bottom end and cooling to cope.

Mantzel Powerbox

Might give you a little more at the top end at the expense of the low down torque that the multiram setup gives. Net effect probably not that great.

Panel Filter OR a cone enclosed in the OEM airbox (this worked well with my old honda)
More direct and bigger cold air feed into the airbox

OEM air filter is huge, and draws in cold air more effectively than any cone filter setup I've seen. I don't believe the air filter is a weak link with this engine so may as well leave it be.

Enlarge throttle bodies

The standard throttles are plenty big enough. Might gain a couple of BHP by cheaning up the interfaces at the expense of driveability if whoever modifies them doesn't know what he's doing.

Courtnay Cams

Choose cams carefully. What do you want to achieve? Cam choice is always a compromise between flexibility and top-end power. Also, make sure your induction and exhaust system is not the weakest link, or you will lose out on both counts with hot cams. For road use, in a heavy car like an Omega, I wouldn't upgrade the cams.

Dastek Unichip

Isn't this just a piggy back that alters the fuelling? I would get a decent chip for the existing ECU rather than a piggy-back. Much better value for money for a start.

Ive also considered Sports CAT's/de-cat but which suits the x30xe best...i dont want her any louder than she is!
Ive also heard of getting custom made exhaust manifolds...bigger ones as these are restrictive. Ive only heard myabe 3 people say this so im not sure.

It also comes down to what's restrictive at the moment. Until you know what the weakest link is, it's not worth upgrading things. There's a guy on Autobahnstormers who's just had some tubular manifolds made up. Let's see what he reports...

Possibly a lightened flywheel!?

I wouldn't bother on a heavy car. It will make the engine seem more responsive when revving in neutral but will give you no more power and less flexibitiy when pulling away, etc. This is assuming it's a manual. If it's an auto your flywheel is already about as light as it can get - it's just got a huge heavy torque converter bolted to it!

Kevin

[miniator]

wow kevin, i think youve managed to contradict everything i have research thus far!

for a start, i know a 3.2 putting out 250 with just breathing mods. ie, a BMC CDA and a straight through exhaust system. so with the other mods ive mentioned youd have to agree that 280 would be possible?!

and that air filter comment, back that up with evidence please....a K&N for example will draw more air that the OEM paper one, and im talking panel filters here

[miniator]

in addition i found that Piper have cams for the x30xe that quote a 20bhp increase.
the courtnays quote an 18bhp increase and are labelled as high torque cams

[Martin_1962]

Simple mods

1) Pipe coming into the air box from the front - cut it flush as it comes in.

2) The exhaust manifolds are restrictive on PFLs, try FL manifolds or ABS manifolds.

3) Chip - use a proper one mapped for your car

4) Inlet - match the splitter to the ports, lots of room for improvements, however requires heads off.

5) V Power or Ultimate

[PaulW]

There's a guy on Autobahnstormers who's just had some tubular manifolds made up. Let's see what he reports...

Do you have any more information on these at all Kevin?  I'm not registered on ABS, so can't see what the general crack is with these...

Thanks

[miniator]

Simple mods

1) Pipe coming into the air box from the front - cut it flush as it comes in.

2) The exhaust manifolds are restrictive on PFLs, try FL manifolds or ABS manifolds.

3) Chip - use a proper one mapped for your car

4) Inlet - match the splitter to the ports, lots of room for improvements, however requires heads off.

5) V Power or Ultimate

im lost here lol, do explain!

[Entwood]

PFL = prefacelift
FL= Facelift
ABS = autobahnstormers

PFL early model cars, generally 2.5's, 3.0's
FL later cars, generally 2.6's, 3.2's... DBW (drive by wire)

ABS .. a guy there is having manifolds made to his own design to try and smooth the gas flows..

[miniator]

ahhh, so id have the PFL ones fitted even though my cars (a 3.0) a facelift!? right?!

[Entwood]

AFAIK all 3.0 have the same manifolds, the FL / PFL change is not exactly in line with the engine changes .... an expert will pass by and give the correct info shortly.....  

I THINK (don't hold me to it)  the PFL/mini FL change was around 1997 mini FL/FL around 1999 and the engine changes around 2000  but I'm probably wrong ...

[miniator]

LOL o dear goodness, im getting more confused the deeper i get into this! Hondas were much easier!

[Entwood]

I've done some research .. and best source I can find is ..

http://en.wikipedia.org/wiki/Opel_Omega#Omega_24V

Right down the bottom under Omega B, among other things is :

Late in 1999, the Omega received a facelift and a 2.2 L 16-valve engine was added to the range as an eventual replacement for the 2.0 L. The following year, a 3.2 L V6 engine replaced the 3.0 L V6 unit, and a 2.6 L V6 engine replaced the 2.5 L V6 unit.

so my guesses were not too far out ..

HTH

[Marks DTM Calib]

wow kevin, i think youve managed to contradict everything i have research thus far!

for a start, i know a 3.2 putting out 250 with just breathing mods. ie, a BMC CDA and a straight through exhaust system. so with the other mods ive mentioned youd have to agree that 280 would be possible?!

and that air filter comment, back that up with evidence please....a K&N for example will draw more air that the OEM paper one, and im talking panel filters here

The restriction offered by an air fliter is related to 2 things.

The resistance of the material used and the total surface area of the medium.

The paper element has a MASSIVE surface area, much larger than any panel or cone filter.....and the material used is not hugely restrictive, only slightly more than a new panel filter.

The oiled filters are also an issue as they clog very quickly (again, low surface area is not helping here!) so drop off quite quickly as the miles ramp up. The oil can also cause issues with a MAF sensor to.

The result is, the paper air filter is as good as it gets in this case!

[Marks DTM Calib]

I've done some research .. and best source I can find is ..

http://en.wikipedia.org/wiki/Opel_Omega#Omega_24V

Right down the bottom under Omega B, among other things is :

Late in 1999, the Omega received a facelift and a 2.2 L 16-valve engine was added to the range as an eventual replacement for the 2.0 L. The following year, a 3.2 L V6 engine replaced the 3.0 L V6 unit, and a 2.6 L V6 engine replaced the 2.5 L V6 unit.

HTH

Lol, long time since I put that info in, about time I got that edited up better!