Turbos - options.

5.0 V10 50v biturbo - 571 bhp
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IanH755
Top Gear
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Joined: Thu Jan 02, 2014 12:50 pm
Location: Stoke and Norfolk

Re: Turbos - options.

Post by IanH755 » Thu Oct 20, 2022 9:13 pm

Fueling - Just be careful with the HPFP's as MRC have said they currently won't tune a 1000hp capable car any more if it has uprated HPFP's but stock injectors!

Instead they only require stock HPFP's (as "uprated ones were no better than OEM" - Doug@MRC) and MRC's own "uprated" Injectors, which are just Porsche ones pt no 9A111012872 (@£200 each), as a minimum to be fitted before they'll map it.

You may/may not require the fuel return line modifying too, dependant on the particular car vs power level required.

Personally I'd also uprate the intank LPFP to something like a Walbro 255l/hr one (or similar) and replace the fuel filter at the same time just to make sure the HPFP's are fed enough fuel to keep up supply to the bigger injectors.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

cammmy
2nd Gear
Posts: 247
Joined: Tue Dec 10, 2019 3:32 pm

Re: Turbos - options.

Post by cammmy » Fri Oct 21, 2022 10:41 am

Thanks for the info. I think inflation has hit these too as the cheapest I see them for is £250 each on eBay.

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