Impul Ecu

[d.matho]

Not sure if there's already a thread for this but I'm just wondering if anyone has had exp with impul ecus, pretty sure they just use a daughter board like nistune. I just wanna find out if anyone has used them before or knows where you can get them tuned before I buy

[GTSBoy]

I thought Impul ECUs were not daughterboard, just burnt EEPROM like most of the other shitty Jap ECUs.

[wolverine]

Could be so bold as to suggest finding a tuner and then making a decision on which ecu from there?

[d.matho]

True so does that mean they can't be retuned if they've been burnt using EPROM?

[GTSBoy]

Well, burnt EEPROM ECUs are usually as tunable as any other ECU. If you want to tune it without fitting a daughterboard, it means burning another EEPROM with the new tune on it. How you arrive at that new tune is another matter. back in the bad old days you had to burn a chip, stick it in, test it, decide on the next round of changes, burn another, rinse, repeat. Nowadays, those that insist on still using EEPROMs at least generally use an emulator to allow them to edit the tune in realish time and only end up burning once.

I don't know for sure, but I was under the impression (a vague impression at best) that some of the JAP ECU tuners like Mines and so on were "fixing" the ECUs in some way so that you couldn't go on to treat it like it was just a factory ECU. But I might be wrong.

Nevertheless, there is almost no valid argument that anyone could bring to bear these days for even contemplating using one of these ECUs. Factory+Nistune or PowerFC is barest minimum in terms of outlay, effort and features that will satisfy the widest range of audience. After that you can choose anything from minimal aftermarket to whole hog aftermarket as needed. Even spending $5k on a completely overspecified ECU that you only use 10% of its capability is probably a smarter choice than spending $300 on an old Jap tuner ECU.

[d.matho]

Yeah that's a pretty good point ay. At the moment I'm running pretty much stock but with coilovers, air intake and full turbo back exhaust.

I'm looking at getting a blitz return flow front mount and a greddy oled boost controller. Basically I don't really mind running 8-10 psi but I just want to be able to run it more effectively and safely. That's why a mate suggested I look at getting and ecu or daughter board.

Pretty sure I'll just wait till after fmic and e boost controller then get an apexi power fc to tune it all instead of that impul EPROM.

[d.matho]

On the topic of ecus though, do you know if the nismo fuel pump can run off the stock r34 ecu?

[KiwiRS4T]

Why would it not?

[GTSBoy]

You can Nistune the R34 ECU and that is a bloody good option now that they have sorted out the option packs and flex fuel is a goer and so on.

Never fit a bigger fuel pump without looking into upgrading the power supply with a relay and cabling and so on.