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If you read the national inservice study on vehicle emissions, on the DOTARS website, you would see that most car on the road a gross polluters anyway. It seems that the majority of cars (80%) tested had engines that werent tuned, spark plugs that needed repacing, faulty cats etc.

Also, if a cat was so important, why dont bikes have them? why do racing cars run without them? why can rally registered cars be driven without them?

sorry, completely off thread topic /whoring:)

  • 6 months later...

hey guys i know stuff all about being a mechanic, looks like some of u have really bad results while others have good results. Seems like most of u like to blame dynos, cats and such, but id say what it would come down to is to blame the tuner?? Id say there are some pretty bad tuners out there, id say some even work for big, well known workshops. Just my 2 cents. Ive seen mates get ripped by tuners! Where even i know what the car should b making and the money spent on it but makes f*ck all power.

Am i totally off track? Let me know what u think!

More HKS turbos . For those wanting an equally good turbo buy the Garrett GT28RS . Same turbine , nearly identical comp wheel (fractionally greater tip height) in TO4B cover . Unfortunatly its turbine housing is a .86AR (good) with the T28 flange (not so good) . It may be possible to order it without the turbine housing and buy the HKS .64AR T3 flange housing . HKS sells their housings separately , see Brett at GCG . ATP Turbo in the US also sell a turbo called GT2871R which surprisingly is nearly identical to the HKS GTRS , in fact it can be optioned with the same compressor . On the outside it looks the same as the GT28RS .

Both of these turbos are really crying out for that .86 Ar turbine housing so it may be worth trying to adapt between the T3 flange (manifold) and T28 flange (turbine housing) . I used the GT28RS on an FJ20 2 litre with great success , positive pressure at 2000rpm and a linear rise to full boost at about 3800rpm . STD actuator is I think about .8 Bar . Buy Garrett , no glits no surcharge same quality .

Cheers A .

I'm hoping for some good figures once i get a fuel cut defender or save a bit and get a power fc. I'm currently getting 215 rwkw at 12psi. Once i get the necessary upgrades i'll be boosting about 16 - 17 depending on how the stock injectors go. There's still much tuning potential to happen :D.

Oww and yeh, i have a highflowed T3/T4.

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