[drewkeen]

I realize that condition of pump, fuel temp, etc. will change these but I am looking to get some ideas of max power based on results from the dyno or drag strip.

How much power is the R70 good for?

How much power is the R90 good for?

Has anyone found the limit of the R90 yet on these cars or seen real pressure drop from demanding more than it can provide? What power level was this at?

[Persian Whisperjet]

I can't answer your question but I know that a very select number of pax on this board have had to do the upgrade, primarily due to using hybrid turbos. in other words you can achieve large power gains before you need the R90.

[Kozlio]

See the graph for the r90 test on https://chiptuning.ca/#https://chipt...log/2/54/55/53. Scroll down towards the end. JR has a comparison of oem pump vs. the r90. He speaks of insufficient pressure drop associated with high demand of fuel with higher stages of tunes. He recommends the r90 above stage 2.8, which is at the ~390 hp threshold (no hybrids or meth yet).

[drewkeen]

It sounds like nobody has found the limit of the R90 pump on these cars yet then?

[ranthum]

There are a couple of people running modified r90s. Don't know if they discovered they didn't flow enough and then had them modified or if they just did it so they knew they had enough.

On a side note, there's a lot of variables besides hpfp. All other upgrades will also affect the power that can be made from r70 or r90.

[CMichael]

Originally Posted by ranthum

There are a couple of people running modified r90s. Don't know if they discovered they didn't flow enough and then had them modified or if they just did it so they knew they had enough.

I wasn't aware of this. Do you happen to have a link? Or any idea what modifications they did?

[VladPC]

You can achieve somewhere in the range of 400-420 hp and somewhere at 800-850Nm with a stock, non modded R90 (the only modification required is dpf removal, and egr, nothing else).

You can get more torque (900Nm) if you play a little bit with the rail pressures.

[robnitro]

But people can get 380 from an R70, jr stg 2.8 and other tunes for example... Why only 400-420 with R90, I'd think it would have a higher limit.

[ranthum]

It's my understanding that the turbos and r70 max out pretty much on a 2.8 or 2.9 tune. Just throwing more fuel won't do much as it's possible to push the turbos out of their efficient range. Adding extra fuel (meth) or extra air (hybrids or nitrous) alone will not change the max power that can be achieved from an r70 very much. To get more power you need to add both air and fuel. Swapping to an r90 and you can run more air.

[meffrey970]

Where can i get a cp3 r90 for my M57?

[335dlci]

I have 3 in stock. Pm me

[Arthuar]

I need to be sure..
I'm going to soft tune my 30D, so swirl delete, pdf delete and egr delete.
Consequently , will be done an upgrade to the intercooler and filter as well.
Considering as first step, I don't touch the turbo, do you think there are any kind of benefit, mapping with or without an upgrade of the pump fuel ( R90..)?
Thanks.

[maryjane]

That's going to depend on how aggressive your tune is.

[T-Dubbs]

does the r70 max out the oem (1600Bar) fuel pressure sensor?

At what point does the oem fuel pressure sensor need to be upgraded to the 2700Bar sensor?

[Chief Orman]

Originally Posted by T-Dubbs

does the r70 max out the oem (1600Bar) fuel pressure sensor?

At what point does the oem fuel pressure sensor need to be upgraded to the 2700Bar sensor?

Did you ever resolve these questions?

[T-Dubbs]

Originally Posted by Chief Orman

Did you ever resolve these questions?

nope

[maryjane]

AN R90 can supply almost 2400 bar with a healthy low pressure supply. Stock injectors tend to not like over 2100 so most add the 2200 sensor, but it will need to be tuned as it uses a 3 volt vs 5 volt supply the 2700 uses 5 but would also need to be tuned. Also with all that extra fuel you'll need hybrids or nitrous to take advantage of the fuel. These cars limiting factor is air.

[Nadir Point]

I bet you guys make alot of black smoke with those R90s.