Jump to content
SAU Community

Recommended Posts

Yes bang for buck with this 2835 KAI could be OK . Provided HKS have just machined out their "T3" flanged 0.64 A/R GT28 turbine housing this opens up a few more doors if say you have a T3 flanged GTRS .

If think about it the GTRS already has a port shrouded comp housing on the cold side and it wouldn't be terribly hard to get a cropped GT30 turbine fitted to its cartridge . Again provided the KAI uses the same turbine housing as a GTRS should be able to be machined out for the larger cropped GT30 turbine and you end up with a 2835 KAI but with a 52 trim 71.1mm compressor .

I'll have to check some pics and specs because there is a remote possibility that the basic comp housing used on the 2835KAI is same/similar to the GTRS .

Simple effective upgrade for those wanting a tad more from a GTRS ? A bit less turbine inlet pressure anyway .

A .

  • Replies 182
  • Created
  • Last Reply

Top Posters In This Topic

Keeping these points in mind, a common fault in tuning is setting a high gain to acheive target boost as quickly as possible, yet have boost drop off in the higher RPM. Obviously based on the above the best way to tune would be to start with a low gain and work your way towards target boost by upping the duty cycle.

How is gaining up to 50hp through the midrange and maybe losing 5-10hp top end a fault?

In the powerFC boost control all you can change is boost pressure and duty cycle

so to bring boost on asap would I increase the duty cycle or lower it?

and will this change the final boost pressure?

I think the FC boost control kit has boost and gain? Or it might be boost and duty?

I can't remember, all I know is that the number that is usually 255 when you first enter a boost setting changes over time so I figured it would be gain that ou adjust going on the explanation given a few posts back but it could be duty, been to long since I played with it lol. But that's good info. I now understand what gain and duty do now

Should make it easier when I go to setup the KAI

I've found when playing with it, adjusting the duty or gain, whichever it is, will change the boost you get. I think with a low setting I had it hit about 8psi then start creeping up. But again it's been a while. I know it hit a certain boost then creeped up or down from there but so playing with it to much will change your boost

  • 2 weeks later...
  • 6 months later...

Gday Cal been reading up about your 2835 Kai hope you have some good luck getting it right id like to know how u go with it mate cos im getting the same kit through streeter its due this time next month. Id like to know what kinda figures you make when you get it dyno tuned mate hopefully its something simple i cant imagine that HKS could of gone too far wrong with this kit considering how good the Pro S was for the RB25s Please keep us posted on what you come up with mate

CHEERS

Mick

No i havent ordered it yet and yes i can see its not looking good at this stage for the Kai kit!

Not compared to the Pro S!

Im keeping my eyes peeled in here to see what the outcome is with this drama with the power figures.

i maybe have too much faith in HKS thinking that they couldnt of gone that wrong with the Pro S replacement cause the pro s was a monster!

I didn't make the same headline numbers as some other people here at SAU with the ProS but I put this down to the variation in car setup, dyno, tuners and the lack of desire to wring the neck of the turbo to make a peak power number.

I think the kai will prove to be a good bit of gear when we see more results.

Not sure what most issue are about having the big top end number, it should be able drive-ability on the street, well it is for me...

My KAI gets me to over 400Nm before 3500RPM and max is up over 450Nm by 4500RPM.... also my power line builds faster that my stock turbo did and does not die off until redline... power is 350Hp up around 6300RPM...

most drive-able 350Hp car i have driven... i even save fuel now as i dont need to drive as hard to get some boost as before....

as said i think too many look for the big end power number but forget about driving under 3500RPM on the street...

just my 2cents after having this turbo on my car... still need my tune to be touched up as well which should see it a bit smoother and maybe slightly better numbers.

89CAL,

NISMO fuel pump

800CC Power Ent. Inj.

Z32

Power FC

Blitz EBC

genreric FMIC

3" zorst come from Japan, bellmouth dump, and some hi-flow cat brought over 4 years ago so can't remember brand

stock AirBox with no cover just a mech grill on filter...

nothing else except a new clutch and a healthy engine according to the tuner.

Mick_o,

yeah i am very happy with this for on the street as i said i get boost better than my stock turbo and am actually using less rev's to drive as the car feels a lot more lively now....

I have a very similar setup.

Nismo 555cc injectors and a K&N pod being the only notable differences.

What AFR and what sort of timing are you running around the top end (if you have that information handy)

Sorry for that i am not too sure.... i would have to ask my tunner next time i see him so i dont give you mis-leading info...

Sorry for that i am not too sure.... i would have to ask my tunner next time i see him so i dont give you mis-leading info...

Not a problem

Having a copy of the tune to compare would be great, but I'm not going to ask for that as I know the answer I/You will get from the tuner lol.....

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

    • And finally, the front lower mount. It was doubly weird. Firstly, the lower mount is held in with a bracket that has 3 bolts (it also acts as the steering lock stop), and then a nut on the shock lower mount itself. So, remove the 3x 14mm head bolts , then the 17mm nut that holds the shock in. From there, you can't actually remove the shock from the lower mount bolt (took me a while to work that out....) Sadly I don't have a pic of the other side, but the swaybar mounts to the same bolt that holds the shock in. You need to push that swaybar mount/bolt back so the shock can be pulled out past the lower control arm.  In this pic you can see the bolt partly pushed back, but it had to go further than that to release the shock. Once the shock is out, putting the new one in is "reverse of disassembly". Put the top of the shock through at least one hole and put a nut on loosely to hold it in place. Put the lower end in place and push the swaybar mount / shock bolt back in place, then loosely attach the other 2 top nuts. Bolt the bracket back in place with the 14mm head bolts and finally put the nut onto the lower bolt. Done....you have new suspension on your v37!
    • And now to the front.  No pics of the 3 nuts holding the front struts on, they are easy to spot. Undo 2 and leave the closest one on loosely. Underneath we have to deal with the wiring again, but this time its worse because the plug is behind the guard liner. You'll have to decide how much of the guard liner to remove, I undid the lower liner's top, inside and lower clips, but didn't pull it full off the guard. Same issue undoing the plug as at the rear, you need to firmly push the release clip from below while equally firmly gripping the plug body and pulling it out of  the socket. I used my fancy electrical disconnect pliers to get in there There is also one clip for the wiring, unlike at the rear I could not get behind it so just had to lever it up and out.....not in great condition to re-use in future.
    • Onto the rear lower shock mount. It's worth starting with a decent degrease to remove 10+ years of road grime, and perhaps also spray a penetrating oil on the shock lower nut. Don't forget to include the shock wiring and plug in the clean.... Deal with the wiring first; you need to release 2 clips where the wiring goes into the bracket (use long nose pliers behind the bracket to compress the clip so you can reuse it), and the rubber mount slides out, then release the plug.  I found it very hard to unplug, from underneath you can compress the tab with a screwdriver or similar, and gently but firmly pull the plug out of the socket (regular pliers may help but don't put too much pressure on the plastic. The lower mount is straightforward, 17mm nut and you can pull the shock out. As I wasn't putting a standard shock back in, I gave the car side wiring socket a generous gob of dialectric grease to keep crap out in the future. Putting the new shock in is straightforward, feed it into at least 1 of the bolt holes at the top and reach around to put a nut on it to hold it up. Then put on the other 2 top nuts loosely and put the shock onto the lower mounting bolt (you may need to lift the hub a little if the new shock is shorter). Tighten the lower nut and 3 upper nuts and you are done. In my case the BC Racing shocks came assembled for the fronts, but the rears needed to re-use the factory strut tops. For that you need spring compressors to take the pressure off the top nut (they are compressed enough when the spring can move between the top and bottom spring seats. Then a 17mm ring spanner to undo the nut while using an 8mm open spanner to stop the shaft turning (or, if you are really lucky you might get it off with a rattle gun).
    • You will now be able to lift the parcel shelf trim enough to get to the shock cover bolts; if you need to full remove the parcel shelf trim for some reason you also remove the escutcheons around the rear seat release and you will have to unplug the high stop light wiring from the boot. Next up is removal of the bracket; 6 nuts and a bolt Good news, you've finally got to the strut top! Remove the dust cover and the 3 shock mount nuts (perhaps leave 1 on lightly for now....) Same on the other side, but easier now you've done it all before
    • OK, so a bunch of trim needs to come off to get to the rear shock top mounts. Once the seat is out of the way, the plastic trim needs to come off. Remove 2 clips at the top then slide the trim towards the centre of the car to clear the lower clip Next you need to be able to lift the parcel shelf, which means you need to remove the mid dark trim around the door, and then the upper light trim above the parcel shelf. The mid trim has a clip in the middle to remove first, then lift the lowest trim off the top of the mid trim (unclips). At the top there is a hidden clip on the inner side to release first by pulling inwards, then the main clip releases by pulling the top towards the front of the car. The door seal comes off with the trim, just put them aside. The the lighter upper trim, this is easy to break to top clips so take it carefully. There is a hidden clip towards the bottom and another in the middle to release first by pulling inwards. Once they are out, there are 3 clips along the rear windscreen side of the panel that are hard to get under. This is what the rear of the panel looks like to assist:
×
×
  • Create New...