FC Zach's '87 Sport

[FC Zach]

Originally Posted by TitaniumTT

Couple things here....

1) Kudo's for Chris for being man enough and responsible enough to admit when he made a mistake. So many people here wouldn't fess up to it and I feel like that goes a LONG way to describe his character, ethics, morals and business practices

Yes, you are 100% correct! I've heard horror stories dealing with other harness "builders" from different car friends. Chris was determined to resolve the issue/s and has been a big help along the way.

Originally Posted by TitaniumTT

2) That is actually pretty genius with the gauges.... damn... I'm going to have to remember that!

I thought it was a great idea as well, it was something I wanted to eliminate having too many gauges yet still be able to monitor different areas. For something that makes so much sense, I couldn't find any diagrams/how-to for doing this. Chris was a big help with this! He made a diagram (color coded and easy to read for me) for the different gauges, showing connections to either a DPDT or SPST switch.

Originally Posted by TitaniumTT

3) It's not impossible or nearly as hard as people think to get a rotary to pass emmissions. I went through that horseshit a few years ago and even made a thread about it somewhere with the results of my sniffer test. I WAS running a cat through, and I didn't alter the tuning that much either. I pulled a little fuel out at cruising because I generally run my cruising a little richer than most anyway, usually ~.87L as opposed to the .92-.95L that most people run at. So I leaned it out to I think .92ish before going for the sniffer test and that was that... done... hopefully never have to go through it again because I would need to build more exhaust bullshit and blah blah blah because now 4" exhuast... does anyone even make a 4" cat?

It is definitely doable, no doubt! The problem I have is that I am not confident (AT ALL) with making any changes to the Haltech program especially without guidance. It's a slow progress but it'll get done and like you say "and that was that... done... hopefully never have to go through it again" that's my thoughts on the tuning. . Once it's done I should never have to adjust it again (except for season changes I have been told and of course modifications). Once it's tuned I'd like to make a separate file just for emissions testing where I'll upload while sitting in line at the facility

Originally Posted by TitaniumTT

So Zac... are you running a cat or trying squeak through without one? Maybe try adding an RX8 airpump right into the exhaust?

No cat, just presilencer (I passed visual inspection like this). I planned to have it tuned till barely running, maybe adding some alcohol as well but worse case I haven't ruled out the idea of running a pump, I just want to see if I can do without one first so I don't have to install/remove a kit yearly.

[FerociousP]

Originally Posted by FC Zach

No cat, just presilencer (I passed visual inspection like this). I planned to have it tuned till barely running, maybe adding some alcohol as well but worse case I haven't ruled out the idea of running a pump, I just want to see if I can do without one first so I don't have to install/remove a kit yearly.

On my '87 Sport, i passed TN emissions on stock ecu with no cat by turning the CAS as far as i could retarded and putting in a bunch of ISO heet (think 8ish bottles) into the gas tank. That idea has been around for a while, and honestly i'm surprised it worked. The car came into the bay doing the TPS idle bounce (prob bc ecu was freaking out)... honestly i think i got lucky, guy may have even pulled one of the probes (dual exh) out early to help.

On my vert, I had a stock air pump running with the outlet hose going to a o2 sensor location directly in front of a working aftermarket cat.

If I had to do it all over again, i'd spend the extra money putting a real cat on there temporarily as its almost a "sure thing". You seem to be ok with multiple attempts so you can mess with tuning and such, but it will be a long road IMO. Especially with being ported. My guess is you will need some sort of air injection, and hopefully can still bolt up a NA air pump easily if you still have one.

[FC Zach]

Originally Posted by FerociousP

and hopefully can still bolt up a NA air pump easily if you still have one.

I've never had one on the car. Most definitely the first thing I threw away ten years ago. Not that it would be a difficult part to get my hands on. . I just want simplicity and to me a separate tune (if possible) is much easier than installing and removing parts yearly IMO. Also, I'm not opposed to using a cat either but this is another part that I will be removing yearly as I don't want that staying on the car.

If it's going to be a difficult "long road", it may be in my best interest to get an antique auto tag (temporarily, however long that may be) so I can drive legally while this tuning work progresses.