RS2 software and Garret hybrid turbo

[|Maku|]

Hey all!


Actually my question is a ancient one. I'm planning to change turbo and I don't want to change con rods. My goal is to achieve 400-430hp and lowest/biggest torque as I can get. Right now I'm using T04E/K26 hybrid and it has a really nasty lag and I don't like it.

My question to you guys is - if I'm going to buy an K26/GT2871 that should have same fast response as K24, what RS2 software thinks about it? Logically thinking software is going to restrict it to spin/produce air in the low rpm's. Ignition map is programmed for RS2 turbo and if I use ball bearing turbo that spins faster than RS2 turbo then I would not be able to benefit from it? One way is to force turbo to spin with harder waste gate spring but still ignition map would be wrong.

Tell me if Ive got it wrong. Same question about K26/3071.


Thanks,

Marko

[Jamo]

No the 2871r needs custom mapping as it's a tricky turbo to map as it will surge badly if the mapping is not spot on.

Better off with the 3071r and this http://www.034motorsport.com/product...c470bffe872fef

[diesel des]

Im running the 2871 on the rs2 map from Paul. Runs ok. Im sure it could be tweeked better, but no surge and good power low lag.

[Jamo]

Thats a homefry, i'd trust that generic map but not many others!

Why use a map with a turbo it's not designed for?

If your going to the trouble of getting a larger turbo then get the right mapping IMO

[S2central.net]

Its NOT a 'homefry' Jamo - I tweaked some RS2 software for Des and its close... Another edit or few and it will be there

Paul

[Rusty]

2871 Homefry... I'm all ears!

[mcandmar]

Me too, the only thing putting me off an RS2 or Garrett turbo setup is having to get the car over to the UK to be mapped. Would be very interested in this if possible Paul.

[DarrenM]

Im getting my RS2 turbo on soon,currently running homefry, what would u guys recommend apart from MRC route?

[S2central.net]

Des is my AFR gauge-equipped guinea-pig on this for 2871 and RS2 setups. Will keep you posted on the outcome.

[maRS2]

I have 2 question

Would a the new wagner exhaust manifold with T3 flange and a GT2871 with T3 hot side have less surge issue that te RS2 EM Gt2871/K26 combo due to more freeflowing exhaust?

Is it possible to run the GT 2871 on a remaped RS2 waiting to get time to go over UK to MRC to get a specify remap for that turbo.

[maRS2]

One more question

With the remap is it possible to cancel this boost Map related to throtle position.
I mean only have full boost when you floor it and if you just release from 2mm you only get 3/4 of the boost. Ithink it's call closed loop
I hate that and if not possible I will go the Apexi AVC-R route

[Bram]

I have 2 question

Would a the new wagner exhaust manifold with T3 flange and a GT2871 with T3 hot side have less surge issue that te RS2 EM Gt2871/K26 combo due to more freeflowing exhaust?

Is it possible to run the GT 2871 on a remaped RS2 waiting to get time to go over UK to MRC to get a specify remap for that turbo.

I would guess that with an even better flowing exhaust you will introduce surge even earlier. A free flow exhaust means better spool-up of turbo and thus more capacity of compressed air into engine by the lower/same RPM. Or am I seeying this wrong?

[macspring]

Please advise

Des,

Can you advise when your 2871 starts to boost with Paul's tweaked Homefry?

Is it a GT 2871RS or another variant?

Thanks and kind regards.

[maRS2]

I would guess that with an even better flowing exhaust you will introduce surge even earlier. A free flow exhaust means better spool-up of turbo and thus more capacity of compressed air into engine by the lower/same RPM. Or am I seeying this wrong?

But if you control the spool up to get same as with RS2 EM and same amount of boost for X rpm should you not get less surge because engine can exhaust more free at same Xrpm with same boost on Wagner EM?

[diesel des]

From memory i get 1 bar at 3K rpm or just over. Will confirm when the car gets through the mot...