Congrats, and thanks for all the great info. Glad to hear you got it all worked out. So was the power increase worth all the work, or would you just replace the 2.5 next time?

L8r,
Zig

Zig, if I had known all the wiring changes that had to be made, I would have had to think twice about going to the 2.7 engine.

There is noticably more power, and given that the 2.7 only had 10k on it, I'd say it was all worth it in the end.

One of the best and most descriptive how to's I've seen. Many thanks for this thread as this will save me a ton of time when I want to swap my 2.5. BTW was it hard to find that 2.7. Sounds like you got and excellent deal???

You're welcome jtz.

Car has been running great since the swap and mileage has been averaging 21.7 mpg.  I'm not sure what the 2.5 mileage was, but I don't think it was much better, if at all, than the 2.7.

Firstly I would like to thanks Stunt for sharing his advanture!  I have been thinking about this mod for a couple of years just for the fun of it and plus 20% extra power/torque.

I am just waiting for a donor vehicle (front cut really) and let the fun begin!

Regarding the exhaust, I had a look through the Suzuki parts manual once and the pre 2001 2.5L V6 extractor and y-pipe has the same part number as the pre 1998 2L V6 and I believe the pre 2001 2.5 V6 shares the same cat/muffler and tail pipe with the 2L 4cyl so I can only guess that the 2001 V6 exhaust is quite small for a 2.5L.

Also wondering if the ECU is different between an auto and manual. I changed the gear swapped box in a Nissan once (SR20DT from AUTO to Manual) and the ECU was different between the auto and manual.

Anyhow thanks again for taking the time and effort for sharing the experience!

Woy, yes, the ECU is different for the auto vs. manual.  Different part numbers.  Also the auto wiring harness has several additional connectors that hook up to the tranny that are missing from the manual harness.

Yes, the exhaust on the 2000 2.5L is a bit undersized for the 2.7L.  There is also quite a restriction on one side.  The engine would breathe a lot better if fitted w/ a late model exhaust.  It would be nice if the aftermarket would come out w/ a performance exhaust system that included the downpipes, and perhaps even a set of headers.