R33 GTR running -9 with no tune

[677_GTR]

Hi guys, I’m new to the GTR scene. Picked up an R33 GTR earlier this year that needs a lot of love.
I’ve been going through the hot side, changing all the gaskets and while it was all off I managed to score a set of -9s. It still had the stock ceramics so I was pretty happy to get the 2860s. 
I live in a small country in the pacific with 0 performance car scene. No dyno’s no performance parts, let alone stock parts for a skyline. I order everything from Australia and do it myself. This means I’ll be running the stock ECU. Maybe down the track I’ll get an aftermarket set up and do a remote tune. 
Will the car run -9s on stock tune safely? 
I have a very heavy foot so I really hope so 😂

 

thanks guys 
 

[GTSBoy]

24 minutes ago, 677_GTR said:

Will the car run -9s on stock tune safely? 

Only if you do not

24 minutes ago, 677_GTR said:

heavy foot

You will not be able to drive it with any serious load without risk of it pinging, which will either slowly or rapidly kill it, depending on how bad it is.

[677_GTR]

Thank you for the feedback bro. Looks like it’ll have to stay off the road till it gets an ecu 

[Dose Pipe Sutututu]

3 hours ago, 677_GTR said:

Will the car run -9s on stock tune safely? 

you would be better off installing a Haltech (or similar) with a wideband O2, run the base map with O2 feedback on at gate pressure.

[joshuaho96]

4 hours ago, 677_GTR said:

Hi guys, I’m new to the GTR scene. Picked up an R33 GTR earlier this year that needs a lot of love.
I’ve been going through the hot side, changing all the gaskets and while it was all off I managed to score a set of -9s. It still had the stock ceramics so I was pretty happy to get the 2860s. 
I live in a small country in the pacific with 0 performance car scene. No dyno’s no performance parts, let alone stock parts for a skyline. I order everything from Australia and do it myself. This means I’ll be running the stock ECU. Maybe down the track I’ll get an aftermarket set up and do a remote tune. 
Will the car run -9s on stock tune safely? 
I have a very heavy foot so I really hope so 😂

 

thanks guys 
 

Run a 7 psi wastegate and wastegate boost and it might be ok on the stock ECU. Basically you cannot run past the last load cell by a significant margin.

[Murray_Calavera]

1 hour ago, joshuaho96 said:

Run a 7 psi wastegate and wastegate boost and it might be ok on the stock ECU. Basically you cannot run past the last load cell by a significant margin.

Would you do this in your own car?

[Dose Pipe Sutututu]

If this was my own car, I would pull about 5 degrees off the CAS, run a wideband, and if that seems ok, send it.

[joshuaho96]

1 hour ago, Murray_Calavera said:

Would you do this in your own car?

That's basically how I've been driving my R33 for a while now. GTIII-SS running wastegate boost. It makes no more power than stock because the turbos aren't flowing any more air than stock. Eventually though I need to fix this so it can actually drive as it should.

[GTSBoy]

53 minutes ago, joshuaho96 said:

It makes no more power than stock because the turbos aren't flowing any more air than stock

Yeah - that's not true.

Larger turbos flow more at the same boost. By definition. I've always found it funny when the claim of same flow same power because same boost is made. The turbine is larger, therefore will put up a lower restriction to flow at any given flow, cf the stock one. Hence, you need less boost to make the same flow through the whole system. Hence, when you have the same boost as before, you must have more flow.

-5s are a pretty decent bit bigger than stock.