Jump to content
SAU Community

Recommended Posts

Hi all, i recently have done a few mods to my r33,

- high mount to4e

- 720cc injectors

- 040 fuel pump

- sard fpr

- greddy ultimate

- greddy plenum

- fuel rail

- new cooler piping

- turbosmart boost tee running 18psi backing to 14psi.

it made 220kw at the rears on 16psi at 6200rpm(limiter set at that, which im pretty pissed about, im thinking its the turbo not making the power, but i need a workshop that can tune it better as i aint 100% happy with the power and tune, any thoughts?, ive previously had an s13 with an rb20 which had link ecu, to4e, fuel pump, ignitors, cooler, exhuast, 15psi that made 320hp, give and take a couple of hp due to different dynos, but my rb25 isnt making the power it should?any ideas will be muchly appreciated?...thanks. Ive heard about Matty Spry if anyone know his contact details or what his workshop is called pklease let me know thanks

Please talk through past experience, thanks

Link to comment
https://www.sau.com.au/forums/topic/282028-extremeyl-good-tuners-in-brisbane/
Share on other sites

G'Day GHO57,

Im the tuner at EFI, I dont normally post on here as that is Ricks (whitey) thing,

The power that you are making in very respectable with a T04E.

One thing to remember that a T04E does come in may different housing and wheel trims and sizes.

Your 220rwkw works out to around 300rwhp which on 16 psi is pretty good.

Its a little lower than 35R sort of power figures with an older style turbo you have to expect that.

I would maybe ring your tuner and ask why the rev limiter is set too 6200, as this is pretty low for a 25. If the power is dropping off then maybe look at camshaft timing as this is a good give away for horsepower falling early.

You say your boost controller is hitting 18psi, then dropping to 14 psi? Do you mean its spiking to 18psi then dropping to 14psi higher in the rpm? if this is the case, Its sounds like you may have a compressor out of flow or a miss match on the exhaust housing side e.g. too small exhaust housing.

How is the drivablilty of the tune? does the car start and drive well? does it use a excessive fuel when not driven hard? These are things you have to take into account other than power figures.

Id give your old tuner a bell, and just ask them. They where obviously good enough to go to in the first place, and they may have explanations for all your questions and even options on how to remedy any issues you have.

Failing that Matty can be contacted on

Performance Injection Tuning Services

Unit 10 / 42 Export Drive

Molendinar QLD 4214

Australia

Phone : 0411 34 00 33

Thanks,

Sean

Edited by EFI Performance
G'Day GHO57,

Im the tuner at EFI, I dont normally post on here as that is Ricks (whitey) thing,

The power that you are making in very respectable with a T04E.

One thing to remember that a T04E does come in may different housing and wheel trims and sizes.

Your 220rwkw works out to around 300rwhp which on 16 psi is pretty good.

Its a little lower than 35R sort of power figures with an older style turbo you have to expect that.

I would maybe ring your tuner and ask why the rev limiter is set too 6200, as this is pretty low for a 25. If the power is dropping off then maybe look at camshaft timing as this is a good give away for horsepower falling early.

You say your boost controller is hitting 18psi, then dropping to 14 psi? Do you mean its spiking to 18psi then dropping to 14psi higher in the rpm? if this is the case, Its sounds like you may have a compressor out of flow or a miss match on the exhaust housing side e.g. too small exhaust housing.

How is the drivablilty of the tune? does the car start and drive well? does it use a excessive fuel when not driven hard? These are things you have to take into account other than power figures.

Id give your old tuner a bell, and just ask them. They where obviously good enough to go to in the first place, and they may have explanations for all your questions and even options on how to remedy any issues you have.

Failing that Matty can be contacted on

Performance Injection Tuning Services

Unit 10 / 42 Export Drive

Molendinar QLD 4214

Australia

Phone : 0411 34 00 33

Thanks,

Sean

All good common sense there.

One of the big ticket items on your list is the greddy plenum. Just because you paid plenty for it doesnt mean it well net you a massive power gain.

At that mod level it would brobably do bugger all and may even cost you some down low squirt.

thank you to all that have replied, fuel economy is better than it was stock, im getting more km's out of a full tank of 98optimax, and with the mods im fairly happy with the consumption atm, yes i am aware the plenum may not do much in power gains, but for future plug changes, more spacious room in the enigine bay i went with it, its a genuine greddy plenum yes it costs big bucks, but hey its not something ill be thinking of changing later on & i dont want a chinese brand that doesnt fit or needs modifying to fit, but the turbo on the other hand, yes but a standard turbo could make 300hp atw, dont understand why a t04e isnt capable especially on 16psi making more power, yes it spikes to 18psi the backs on to a steady 16psi, cheers for all the info guys please pm me a workshop that is able to help me cheers.

If you have good coils you shouldn't need to gap your plugs down to 0.7mm - all you're doing is hiding a weak spark.

Try opening them back up to 1.0 or 1.1 mm and see if that helps your idle, obviously if it starts breaking down under load at higher rpm though (at 18psi and not insane power you should be right if the coils are in good nick) you'll need to either close them up a little bit or invest in stronger coils. IMHO it's worth looking at a set of LS1 coils or something similar if your ECU can drive them, it doesn't sound like you have an issue with upgrading with an eye to the future :(

thanks for that, yeah the coilpacks are brand new, i dont know why but "they" said to me that i needed a cooler plug(which is correct for higher boost levels), but yeah im taking it to get it dynoed again on the 15th-08-09 so it will be interesting to see what is stopping it, cheers all.

Big Thanks to EFI PERFORMANCE for their help so far. Appreciated

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
    • Any going to watch World Time Attack at SMSP this year?
    • Appreciate the correction on the "ground", that will make a huge difference to looking at this. That makes complete sense about AF70/AF71 which is what I had come down to being the issue, one of these. I'll have another look in the ignition wiring when I get a chance next week. I'll also make up a jumper wire for running that AF73 test.  ECU is fine, relay itself is fine, pump harness is fine and the pump itself is fine. I am going to upgrade the Walbro 255 anyway with a DW300 I have since I need to replace the fuel sender and I'm going to upgrade the FPR with my chasebays kit ready for new plenum/injectors/dbw, but I'll get this working first. That's why this is so frustrating. 
×
×
  • Create New...