Buick and Ecotec V6 Performance Upgrades

[Bloss]

Th

That's interesting that those mods would give an extra 10 to 15. I have a memcal on its way and Pacemakers that just need a clean up and repaint. Bloss if you get headers go for Pacies. From the looks of them they look a really good extractors compared to some i have seen. I'm pretty sure they are tuned length and the tubes are nice and long. Apparently twin cats are the go. I have a bench seat that i want to keep or i would consider fitting buckets and relocating the handbrake and fitting twin cats.

Thanks buddy. I'm trying to decide between the Raptor supercharger or a cai, extractors, high flow cat & catback exhaust. I'm happy with even just 180-185kw at the flywheel.

 

[losh1971]

Yeah I won't get 15 then. Mine has done 200k. Doesn't use much oil maybe 500 - 600 every 10k.

 

[losh1971]

Reckon if you went super charger you would be best to get Pacies and decent exhaust. Memcal tune is a given and is only 150 bucks, so money well spent IMHO.

 

[losh1971]

My memcal should be going in this week. I will report back on how it feels afterwards. I could have it dynoed but don't really want to spend the money at the moment. I might have it dynoed next year once i get the CAI fitted.

 

[Immortality]

Th

Thanks buddy. I'm trying to decide between the Raptor supercharger or a cai, extractors, high flow cat & catback exhaust. I'm happy with even just 180-185kw at the flywheel.

You won't get 180kw with just basic bolt-on mods like exhaust and intake. Stock VR V6 is about 130kw and the later model ecotec is 147/152kw depending on exactly which model it comes in.

Another consideration is how you use that power, a diff ratio change and/or (a small) stall converter will help make much better use of the power you have. TBH, these days I am off the belief that Holden screwed the pootch when it came to gearing the V6 models (based on a 100km/h speed limit). There are plenty of users with upgraded diff ratio's (anywhere from 3.45 to 3.73) who have seen improvements in fuel economy even though the engine is turning at a slightly higher rpm for a given road speed

 

[losh1971]

10-15 would be the good end depending on the engine condition, considerably less if it's a flogged beast.

If I got say 8-9 given my engine has done 200k, would it be very noticeable without putting it on the dyno?

 

[losh1971]

Another question does fitting extractors improve fuel economy like they claim it does?

 

[EYY]

You probably won't notice more peak power, but you'll likely notice its more responsive (sensitive to small throttle movements).

 

[Immortality]

^^^ What he said

 

[deserthead]

TBH, these days I am off the belief that Holden screwed the pootch when it came to gearing the V6 models (based on a 100km/h speed limit). There are plenty of users with upgraded diff ratio's (anywhere from 3.45 to 3.73) who have seen improvements in fuel economy even though the engine is turning at a slightly higher rpm for a given road speed

Can confirm this one! I not long ago threw in 3.45s in my VS ute (L67) and at 105kph, engine is turning at 2100rpm, average on the highway is between 7.8-8.2l/100ks, havent done a trip longer than about 150ks in one trip but I know it would happily be toward the lower end of the scale.