Fmic And Retune

[kingtube69]

Hi All,

I've had a quick search but couldn't find a definite answer. I have an R33 S2 GTST and it's got a few mods to it:

FMIC

3" Exhaust to highflow Lukey exhaust

Nistune ECU

10 pound wastegate spring

Splitfire Coilpacks

To my knowledge it's running a stock set of injectors and fuel pump (yet to confirm) - I may have forgotten something, sorry.

It was last tuned with a stock SMIC and the exhaust as is. My question is would I get more power from the car if I got it retuned with the FMIC this time? It made just over 170 at the rear wheels but after reading a few threads on here (this for example - http://www.sau.com.au/forums/topic/10567-front-pipe-dump-pipe-beforeafter-dyno-results-203rwkw-stock-ecuturbo/) and they are making similar/more power and I have the Nistune.

Any replies are appreciated!

Cheers, Jacob

[Blackkers]

If you're thinking of spending some money on a tune there's a couple of things you should do beforehand.

New fuel pump for safety more than anything. The stock ones aren't very good now that they're 20 years old.

Dial in some extra boost with the tuner. 10 pounds isn't a whole lot these days and you're not maxing out the injectors yet.

Edit: sorry I thought you said highflow turbo. You can't really go much higher than 10-12 psi on the stock turbo without risking damage

Edited December 7, 2014 by Blackkers

[kingtube69]

If you're thinking of spending some money on a tune there's a couple of things you should do beforehand.

New fuel pump for safety more than anything. The stock ones aren't very good now that they're 20 years old.

Dial in some extra boost with the tuner. 10 pounds isn't a whole lot these days and you're not maxing out the injectors yet.

Edit: sorry I thought you said highflow turbo. You can't really go much higher than 10-12 psi on the stock turbo without risking damage

What would the stock injectors capable of?

[GTSBoy]

Roughly 200-220 rwkW depending on quite a few factors, including the optimisim level of the dyno.

[kingtube69]

Thanks GTSTBoy, is GTR injectors a good upgrade?

[Badgaz]

if you are going to change injectors then just buy some decent sized ones...gtr ones are an upgrade until you need to upgrade them again....do it once do it right.

[Dose Pipe Sutututu]

Thanks GTSTBoy, is GTR injectors a good upgrade?

won't fit on a GTS-t without some serious dicking about.. at about the same time you could convert to 21st century injector technology like what I've done here:

http://www.trak-life.com/diy-converting-top-feed-injectors-r33-gts-t-skyline-rb25det/

[Jordy32]

Cool article Johnny, cheers for sharing

[KiwiRS4T]

No point in upgrading the injectors with the stock turbo - you're not going to crack 200kw

[kingtube69]

Thanks everyone for the input, I'm new to turbo life so every bit of info is appreciated!