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Ecu For 99 Rs4s

Brendan&Ana
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d1_drifter Community Regular

d1_drifter

Posted
Posted

The front mount will be fine. Doesn't really have any effect on your emissions.

RED513 is right on the money. Cat and o2 sensor checks and you'll be right to go.

Unless you have drastically changed the amount of fuel (injectors) or air (turbo), then you have no need for an aftermarket ecu. (for emissions, of course. Always power benefits from a tune! :rofl2:)

Brendan&Ana Collaborator

Brendan&Ana

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The front mount will be fine. Doesn't really have any effect on your emissions.

RED513 is right on the money. Cat and o2 sensor checks and you'll be right to go.

Unless you have drastically changed the amount of fuel (injectors) or air (turbo), then you have no need for an aftermarket ecu. (for emissions, of course. Always power benefits from a tune! :rofl2: )

nah only mod is fmic and exhaust had pod but put standard airbox back on

how do i know if the cat thats on there is good enuf

  • 1 month later...
Brendan&Ana Collaborator

Brendan&Ana

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hey guys had car emissions tested and it bombed out real bad so im thinkin of just doing what the tuner said and get the aftermarket ecu but he also said that nistune will not have the paremeters that i need 2 get it to pass

any one know where i can get a power fc

or does any one know anything about microtech as they are in my area and will install 4 1400

QWK32 Veteran

QWK32

Posted
Posted

nistune and power fc are very similar, just the power fc has more resolution in the maps. nistune will do fuel & ignition, closed loop corrections, after start / cold start and acceleration enrichment, what else do you need to get a good tune to pass emissions. microtech are alright, but its not an ecu i'd be picking, especially for an emissions pass.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Get another tuner! Nistune will tune your engine fine. When you say bombed out on emissions test what was the problem? Do you have any numbers, readout? Did you replace the cat convertor? With an almost standard car its ridiculous to be telling you that you need a Microtech.

Brendan&Ana Collaborator

Brendan&Ana

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  • Author
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Get another tuner! Nistune will tune your engine fine. When you say bombed out on emissions test what was the problem? Do you have any numbers, readout? Did you replace the cat convertor? With an almost standard car its ridiculous to be telling you that you need a Microtech.

ive got a read out here somewhere ill have to scan it and post it and no i didnt change the cat the exhaust place said they only put cats on that meet australian standards and yeah the tuner is saying power fc but i think h just wants to try n make some extra money out of me wants 2 charge me 2500 then tuning on top

pipster11 Grand Master

pipster11

Posted
Posted

try and find out what make the cat is

x-force cats are notorious for their poor performance (both power and emissions wise)

catco and metalcat are supposed to be good tho

and x2 on the nisstune being as good if not better for emissions

have you changed your o2 sensor while you have owned the car? if not, replace it asap its probably the main reason it failed the test cos the ecu can't see how rich its running

d1_drifter Community Regular

d1_drifter

Posted
Posted
Actually a "lean" tune will fail the IM240 test.

The tune must be such that the levels of CO, hydrocarbons, and NOx gasses are all within regulations.

A lean tune will fail just as hard as a rich tune will.

As quoted above, it's not about how filthy rich your tune may be but the gases that are created by the combustion of O2 and fuel.

It is imperative that you have a catalytic converter that is able to convert the gases into other gases that aren't measured in the IM240 test.

This is why decat pipes are illegal and carry a hefty fine for emissions.

fat-lad Rising Star

fat-lad

Posted
Posted
hey guys had car emissions tested and it bombed out real bad so im thinkin of just doing what the tuner said and get the aftermarket ecu but he also said that nistune will not have the paremeters that i need 2 get it to pass

any one know where i can get a power fc

or does any one know anything about microtech as they are in my area and will install 4 1400

you know what i think about this bloke man, just get nistune!!!

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