whats the diffrence 2.5 d22 ,2.5 d40

hi all i have a 2.5 d22 with 98kw now the d40 has 128kw from same engine how is this achieved is it a turbo or computer how!!!! i want that power or close to it please enlighten me thanks guys .

giday nav, according to my book you could reach 125kw or even higher with a diesel chip.

or around 160kw if you have a D40

nav-time09 said:

hi all i have a 2.5 d22 with 98kw now the d40 has 128kw from same engine how is this achieved is it a turbo or computer how!!!! i want that power or close to it please enlighten me thanks guys .

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umm 30 kw is the difference lol
check the boost on the d22 2.5L cause i heard the d40 is running 18psi standard, dont know how true it is.

my d40 ran 1.4 bar standard...the caribbean models didnt come with a dpf though

14.5 psi to a bar

my d22 runs 17psi boost, know many of the others here are about the same

Computer tune is different, turbo is different, intercooler is different.

Thought I would revive this thread as I am contemplating "downgrading" to a D22 from my D40 V6 (need to save some money on fuel & repayments...). However I would like to squeeze a few extra kW & Nm out of the D22, without sacrificing fuel consumption. Is it as easy as a chip and exhaust? What have other owners done and what results are you getting? Fuel consumption? Horsepower?

There's a thread where one member installed a Diesel power chip (I think) to his ST-R and the power increase was marginal - only about 5%. He was very disappointed and wanted a refund.

I have the diesel gas system on my car and enquired about doing the chip also, i was told the chip would be a waste of money to do if i have already done the gas conversion. I dont know this for fact i was just told this, maybe someone who has both can verify if this is true?

So I have a Spain built D40 RX, I understand that the turbo and intercooler are different on the D22 but is this the case between the RX spec 128 and the STX spec 140 odd motor. I would like to up the power but don't want to chip it. I would like to achieve it the Nissan way if posable. Is it just a retune of the ecu or are there parts that need to be swapped out?

skyline_man said:

There's a thread where one member installed a Diesel power chip (I think) to his ST-R and the power increase was marginal - only about 5%. He was very disappointed and wanted a refund.

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Wonder how that went cant imagine any chip company giving a refund. Wonder how u would go through consumer affairs claiming false advertising?

MrCBR said:

So I have a Spain built D40 RX, I understand that the turbo and intercooler are different on the D22 but is this the case between the RX spec 128 and the STX spec 140 odd motor. I would like to up the power but don't want to chip it. I would like to achieve it the Nissan way if posable. Is it just a retune of the ecu or are there parts that need to be swapped out?

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Yes mate there are a few different parts between the two engines,

different cylinder heads,

different turbo,

ECU,

exhaust,

I now you said you dont want to, BUT it would be allot easier and cheaper to do the exhaust and quality power chip (not just a rail pressure chip but one that adjust injection timing and boost.)

i know maybe silly but couldnt you just grab the turbo and other required pieces from a D40 if they are the same engine?? then have it tuned.

Never been done that i know of but as you would know anything is possible my 22 is on 152kws 526nm at the flywheel drive it nice every quarter of the tank returns 200-230kms why would you bother???