Hi everyone. I have been using powerfc for a while and is currently reading up to prep for my jump to a haltech... I have a few newbie question I want to ask hope you guys can help.

I am looking at the 2500 since I want to run seuqential turbo and I am looking at the pnp kit for now, not looking to go full custom harness for the time being.

I want to ask about the air temp sensor that is included in the kit, I know it state to run an avi input from the aux connector, in this case can I just get rid of the stock air temp sensor and reload calibration to use the stock wire and save an input there?

Same goes for some other sensors like water temp, fuel temp etc? Change to haltech sensor and reload calibration using stock wiring? Will it affect my stock cluster reading? I am planning to go IC7 later but not now. Wonder if changing the sensors will affect stock gauge.

Finally, is the Can keypad working with the elite or is it still in development for the elite series?

Thanks alot guys..

 

You can use a Elite 2000 and still run the sequential turbos. Its less expensive and supports the stock configuration with no issues. PNP harness works very well! I for good measures normally replace the haltech air temp sensor with a fast reacting air temp sensor that's a PNP option, which Chris Ludwig sells from his website on LMS EFI.

As far as changing sensors I recommend don't. The haltech elite 2000 with PNP option will work fine for a relatively stock application. Fuel temp is not something your going to monitor when tuning a stockish FD unless your running dual pumps or something more highly modified as far as the fuel system goes.

 

Most will opt for the 1500 or 2500 v the 1000 or 2000. The price difference is a few hundred dollars but there are some nice benefits beside DBW such as 4D mapping and 3 level fail safes.

As mentioned above, use the Triumph IAT instead of the one Haltech provides. It’s a bolt in swap instead of having to drill and tap for the Haltech sensor. Performance wise, they’re a wash. Connect it to the OE harness. No need to go through the aux connector on the PnP harness. Use the OE coolant temp sensor and TPS. Use the ECUs onboard MAP sensor. The software has a cal file for the OE coolant temp sensor. The Triumph IAT is close to the OE IAT cal file Haltech provides. I can get you one that’s a little more accurate.

All the gauges will continue to work. The coolant temp gauge has a separate sensor in the rear iron beside the oil pressure sensor. Tach will be driven by the Haltech so it will need to be properly programmed.

 

To add to this thread, can someone explain the advantage in using a custom wiring harness instead of the plug and play kit, on a sequential turbo car?

 

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I used a PnP kit on my car (back when it was seq. turbo) and it worked fine.
I think the advantages of a custom harness would be that you get just the connectors you want ie, you could have one made without the emissions connectors and wiring which greatly reduces the bulk of the harness.
It of course also means you've got fresh wiring which is nice if your old harness and connectors are getting crispy from age and the heat of the engine.
Then there are the little things you can get with a custom harness like labels for connectors (always nice) and you could specify other connectors for non-stock parts and I've also seen some people include a disconnect coupling and attach it to the firewall so that they can disconnect the harness without needing to disconnect from the ECU and pull it through the firewall hole. Pretty cool.
But as far as a performance advantage? I don't see why there would be one but I'm always interested in other opinions.

 

The 30 year old harnesses on these cars are pretty crusty by now. A new slimmed down harness is a great thing to have for reliability.