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[Kevin Wood]

Actually, I don't have a catera, I have a pontiac fiero, the engine is from a '97 catera. which uses a manual tb. the tranny is from a saturn.
So I could use the euro-spec ecu.

Sounds feasible then. Do you know what engine management system it uses? Non-DBW UK cars are Bosch Motronic 2.7.1. If the pinout is the same it should be a straight swap. And a UK tuning chip would plug straight in.

Does it have the same ancillaries? Multiram air intake, SAI, EGR? Might have to fool the ECU with some resistors if not all the actuators are present.

Kevin

Here's a look at the Caddy setup,

Engine bay

ECU pic

Is this the same as euro-spec?

That ECU looks totally different to my UK car (3.2 with DBW). The underbonnet view looks identical though. And yes, I did mean 2.8.1 / 3.

Kevin

[Positive P]

After doing some more research, I found that the US-spec ecu is designed to support OBD-ll , and coil-on-plug setup. Also it is designed to allow a very low rpm (450rpm range) why I have no idea.
I hope that with a little work and some R&D I can raise the compression, maybe open up the intake, add larger throttle body, maybe even port the heads a little. The US-spec is set between 9.8:1-10:1 compression where the Euro-spec is 10.8:1. I'm sure that makes alot of the difference. 180-190 bhp vs. 211 bhp. I'm gonna push for 11:1 on the compression. US-spec pistons may be the problem though. From what I'm told, they don't support anything more than 10:1 comp. The ecu will be a problem as well, being only designed for automatic transmission, I'm using a 5-speed manual. Also US-spec only supports electric throttle drive no cable. I'll figure that out.
Does anyone here know who builds the 5-speed tranny used in the FWD versions of the X30XE, or with the 2.5 or 3.2 Vectra?
Here they used a GETRAG.

[Kevin Wood]

The UK spec ECUs can be configured for auto or manual transmission using Tech 2. Not sure if yours will be the same but probably worth a look.

Kevin

[Positive P]

Thanks Kevin!

[Warez]

Here's a look at the Caddy setup,

Engine bay

ECU pic[/quote]

The car pictures is a 2000 or 2001

The ECU shown is the older 1997+1998 ECU. The 1999-2001 look different.

[Warez]

After doing some more research, I found that the US-spec ecu is designed to support OBD-ll , and coil-on-plug setup. Also it is designed to allow a very low rpm (450rpm range) why I have no idea.
I hope that with a little work and some R&D I can raise the compression, maybe open up the intake, add larger throttle body, maybe even port the heads a little. The US-spec is set between 9.8:1-10:1 compression where the Euro-spec is 10.8:1. I'm sure that makes alot of the difference. 180-190 bhp vs. 211 bhp. I'm gonna push for 11:1 on the compression. US-spec pistons may be the problem though. From what I'm told, they don't support anything more than 10:1 comp. The ecu will be a problem as well, being only designed for automatic transmission, I'm using a 5-speed manual. Also US-spec only supports electric throttle drive no cable. I'll figure that out.
Does anyone here know who builds the 5-speed tranny used in the FWD versions of the X30XE, or with the 2.5 or 3.2 Vectra?
Here they used a GETRAG.

The compression on the European and North American engines is the same.

Mechanically both engines are identical as is the power. Though the NA is rated at 200, it is in fact 210 just as the European is rated. I dyno'd my car to confirm this.

The main difference between the two cars is that the NA car had OBD-II before the European cars. Europe required it on all cars by 2000 IIRC, in NA it was 1996.

Can a member in the UK confirm what was the first year that had OBD-2?

[MutantCav]

OBD-2 will have come in here with DBW 2.6 and 3.2 engines...not sure if they came in 2000 or 2001...

[Marks DTM Calib]

The UK X30XE was never OBDII compliant and they were all 10.8:1 compression ratio (the US cars have a slightly dished piston to lower the compressiong ratio)

The Y32SE (fitted from about 2001) was OBDII compliant and this has the lower 10:1 compression ration with drive by wire throttle and coil per plug setup.