BMW 5-Series Forum (G30) - View Single Post

Jonny2400 · 09-20-2021, 09:19 AM

Hi guys,

Was going to use Celtic tuning for my stage 1, as I previously used them on my F10.

However looking at their projections they give 330bhp and a massive 794.5 NM on the 530dx.

While the BHP is inline with most other companies, their torque figures seems considerably higher, as most are around 700NM

So that has me thinking about, can the gearbox handle that level with ZF rating it as a 750NM box.

So I had a look at what box inside the m550d, which is rated at 760nm, according the real OEM it’s the same GA8HP75 as the 530/540d.

Interestingly, the new M340d uses the GA8HP76 box, however I can’t find any max toque specs for that.

Would also be hesitant to have the Celtic map installed due to the torque rating ?

09-20-2021, 09:19 AM	#1
Jonny2400 Private 25 Rep 71 Posts Drives: G30 530d X Drive M Sport Join Date: Apr 2012 Location: Belfast iTrader: (0)	Maximum torque on ZFGA8HP75 Hi guys, Was going to use Celtic tuning for my stage 1, as I previously used them on my F10. However looking at their projections they give 330bhp and a massive 794.5 NM on the 530dx. While the BHP is inline with most other companies, their torque figures seems considerably higher, as most are around 700NM So that has me thinking about, can the gearbox handle that level with ZF rating it as a 750NM box. So I had a look at what box inside the m550d, which is rated at 760nm, according the real OEM it’s the same GA8HP75 as the 530/540d. Interestingly, the new M340d uses the GA8HP76 box, however I can’t find any max toque specs for that. Would also be hesitant to have the Celtic map installed due to the torque rating ?
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