What turbo to put in the RS2?

[prj]

Its also still running stock MAF and a dizzy

That still means the engine is mapped to the last cell.
It's been done this way for almost twenty years now though, so go figure.

I doubt the power will be much over 400hp though, because otherwise the stock MAF's wire gets torn apart.

[A80Avant]

i had a similar setup to Ross with my RS2, with a stock head and uprated rods and pistons(mahle, not je). I was making around 425hp on my calculator(performance box) and extremelly fast spool on the 3071 .63AR and VEMS. I must say that the turbo ran out of power after around 5500rpm on most gears though.

Maybe comp has something better to offer there, but i doubt you would see something tremendously different.
If you do a cyl head porting though, you will get more.

[Lloyd]

Lloyd - I didn't realise you had made the upgrade, was it to replace the stock turbo and if so was it remapped? I would be very interested to hear how it compares in terms of when the power comes in and how it's delivered.

Unfortunately, my Original RS2 turbo expired back in November.

I've attached a sound clip for those interested in what it sounded like. Clip recorded from inside the car whilst driving along very slowly in second gear 5-25 mph between speed bumps. Gauge reading -0.5 to 0 Bar, no higher as I was a bit concerned!!

- Visual inspection showed that the end of one of my turbine blades had cracked off

As I needed a new or re-conditioned turbo and didn't want to spend loads on changing other components, fitting a Hoffer76 Hybrid Turbo made a lot of sense - especially as Rich was also able to supply the chipset to run it. I also look forward to getting some dyno figures as it feels stronger than it did. Ideally a hub dyno, if I can find one with the right adapters.... I've also noticed improvement to economy (when not booting it around) as well as it feeling smoother transitioning on/off heavy throttle.

More recently, Rich serviced the wastegate (pictures enclosed) and added a 1.9 Bar spring - his chip set was mapped using a 1.9Bar spring. On the last visit, Rich also fitted a 3" downpipe (from the recent group buy) and fabbed it up to the Milltek. The DP is a good fit - even managed to squeeze the CV heat shield back on!
Thanks to both Rich and Nero

I've now got a full 3" turbo back exhaust running into a Milltek centre and back box. V-Band 100 cell race cat, with a de-cat pipe on the side. It's good, but I'm considering adding an additional small silencer in place of the cat. I'm too old for it to be anything other than OEM quiet for the longer trips!

[Lloyd]

Struggling with the sound clip. How can I attach a file in .AMR format?

[prj]

Struggling with the sound clip. How can I attach a file in .AMR format?

Zip it.

Also, the thing is, you won't gain anything from that exhaust without a remap.
A freer flowing exhaust allows you to run more boost or more timing, but your chipset is not mapped for more boost or timing.

And no, motronic won't magically up the boost or increase your timing. It doesn't even know the amount of air going into the engine.

[prj]

Also,
I'm kind of curious as to the chipset you sell Hoffer76.

440cc injectors, 1.9 bar spring sounds exactly like what 034 Motorsports offer:

http://www.034motorsport.com/034efi-engine-management-034efi-chip-tuning-chip-tuning-package-gt3071r-stage-p-1220.html

Considering you have stated on the forum, that you have ordered these chips before, are you copying their work illegally?
Or do you have an agreement with them?

This is starting to sound fishy.

[Lloyd]

Zip it.

Also, the thing is, you won't gain anything from that exhaust without a remap.
A freer flowing exhaust allows you to run more boost or more timing, but your chipset is not mapped for more boost or timing.

And no, motronic won't magically up the boost or increase your timing. It doesn't even know the amount of air going into the engine.

Thanks - have zipped it and added it to the above post.

I can only comment as an amateur consumer but it feels better at spool and at the top end with the new DP. Placebo effect? Maybe... Will get a plot soon with luck. (I am running RS2 injectors btw.)

[prj]

I am running RS2 injectors btw.

Have you checked your AFR at full boost?

[Lloyd]

Have you checked your AFR at full boost?

No, not yet - I have been considering buying one of your kit's for AFR/Wideband.

[prj]

No, not yet - I have been considering buying one of your kit's for AFR/Wideband.

Not my kits... just a kit I am using and like.
But yes, please do, because RS2 injectors max out before 400hp.

[nemilosu]

Not my kits... just a kit I am using and like.
But yes, please do, because RS2 injectors max out before 400hp.

hy.
what do you think about this turbo ?

http://www.dezod.com/pd-precision-t3t4-turbocharger---6076e-600hp.cfm

i have a 4bar fpr, 440 cc injectors and fastech soft
if i buy this turbo i will make another exhaust manifold.

[prj]

hy.
what do you think about this turbo ?

http://www.dezod.com/pd-precision-t3t4-turbocharger---6076e-600hp.cfm

i have a 4bar fpr, 440 cc injectors and fastech soft
if i buy this turbo i will make another exhaust manifold.

I don't know what there is to think.
But if the HP rating is correct, you need a standalone ECU as well. This old motronic is no good much past 550hp.
Also, you will need at least 630cc deka's, better 700cc.

[nemilosu]

the soft i have is for abou 400 hp
i have a kkk k24 7400 with compresor damaged and i think is from overspining.

[urs4guy]

Hey Jeffer

I would highly recommend Comp Turbo to you. I have their CT43-6768 BR billet compressor turbo and I love it. This turbo has a few supporting mods and has pulled 755hp at the wheels. The turbo is rated to go to 960hp crank and there's a little left on the table so that is totally believeable. Here's a link to their catalog:

Http://www.compturbo.com/pdf/CompTurboCatalog.pdf

From this catalog I'd recommend the CT3-5856 billet compressor turbo for your stated needs plus a little headroom. Both my cars have billet compressors. My A4 has a K-16 based journal bearing turbo with said billet wheel and of course my Comp and they really do work well.

Hap, wit dakine Beellaye not from Evahboost, Maguire

[Rocco]

Hey Jeffer

I would highly recommend Comp Turbo to you. I have their CT43-6768 BR billet compressor turbo and I love it. This turbo has a few supporting mods and has pulled 755hp at the wheels. The turbo is rated to go to 960hp crank and there's a little left on the table so that is totally believeable. Here's a link to their catalog:

Http://www.compturbo.com/pdf/CompTurboCatalog.pdf

From this catalog I'd recommend the CT3-5856 billet compressor turbo for your stated needs plus a little headroom. Both my cars have billet compressors. My A4 has a K-16 based journal bearing turbo with said billet wheel and of course my Comp and they really do work well.

Hap, wit dakine Beellaye not from Evahboost, Maguire

are there Comp turbo for use with K26 flange??