PorKen

Before I close the lid?

I bought a pair of (eBay chips). Nice improvement, not monstrous, but nice. Although, right now I'm traction limited by the recent rainfall.

I found (this thread) by Touque, and it appears that NOx is increased, but still passed. Any other tests out there?

I can see on my L/100K meter that the pulse width is longer. It goes farther into the [] zone at low rpm/full throttle, where it did not before.



I tried the EZ-F'r combined with these chips, and it pings.

BC

If it pings, with the EZFr and the chips, does that mean that the EZFr pushes the timing even farther then the chips do because the addition is on top of the chips statically?

PorKen

There's two parts to the EZ-F'r. The white wire is the full throttle switch, the green, the Temp II tweak.

The white wire is basically keeping the cruise map at 2/3 throttle and up, where normally, there would be a blanket 20° retard (AFAIK). The green wire keeps the cold coolant advance, 3° at idle/cruise.

The chips must push the idle/cruise map so that it becomes too much with the tweak.

I'll experiment tommorrow and remove one or the other, to see which is the problem, just to be sure.

Imo000

The chips should only effect the map at WOT and anything bellow that should be OEM. Now perhaps this is not the case. However that is about the only way a company can get a CARB certificate on chips. I could be wrong.

Don Carter

My 86.5 failed with high NOX about 3 years ago. Since I don't drive it much, I decided to take my chances on the inspection. After 3 years, I finally got a ticket, so I figured I'd try the smog test again. Since the failure, I had put the Ebay chips in, so I thought my chances of passing would be pretty low with the more advanced timing, but the car passed, I couldn't believe it. The only thing I did different was have the guy keep it in 2nd gear, which kept the RPMs up near 3k, instead of low 1000's. Now I'm legal, and it feels good! (Got out of the ticket too)

Mike Frye

Don,

Isn't the 86.5 set of chips different?

Porken,

Thanks for the update. I'll be working with the same combo (got your EZ-F'r yesterday, thank you very much). Nice instructions BTW.

I don't want no stinking Pinging though. Would the octane rating of the gas affect that or are you already running higher rated stuff because of the EZ-F'er?

I need to get through inspection so I'm going to do that before I put the new chips in.

James-man

I have run chips for about 10 years on my 86.5, but mine were of the authothority variety. Not sure what is different about "eBay Chips". Anyways, for me it has always been WAY WAY, no, make that WAY^9 below allowed amounts during emissions testing.

I would like to see someone invent a retrofitted knock sensor system so that we have a way to squeeze more power from a pre-S4 engine.

Good luck to you.

James-man

Heh heh. Just thought of something for those struggling to pass emissions when you have advanced timing.... Put the ignition system on low octane fuel mode before going to the testing station. Don't remember the color of the wire off the top of my head, but have read about it here on Rennlist before. I have never tried this, but have never needed to. Just an idea.

James-man

Just made my lazy fingers seach - Tweaking EZ-F, part deux - the knock sensor idea has already been mentioned. Sorry to have made a redundant suggestion.

Larry Velk

In Wisconsin they don't bother giving you the specifics any more on emissions (they used to). My '86.0 passed, apparently with no problem - as they just ran it up once and done. I have Autothority chips. I had new caps, rotors, wires, plugs, airfilter, and under 55k. It's a 5speed. I must admit I thought Porken's '86 would ping with chips after the internal timing mods. Mine seems to clatter if you lug it anywhere near 1000 rpm - if you run it harder - no noise. The noise may not be a ping as it sounds more like a '71 Chevy diverter valve for the AIR, but only at that specific mode - load and 1000 rpm. The chips do not only work at WOT, where they do not modify OEM is at idle as I have been told. My city fuel mileage is very poor at 12 mpg, but highway still 21 or so.

PorKen

Thanks for all the good info! I really didn't want to have to swap chips for testing.

I've been in and out driving around testing different combinations. I've got a few more and then I'll report back.

BTW: I should have said that it was not a huge jump in power compared to having the EZ-F'r mods. The difference would have been much more dramatic if I'd gone from stock, I reckon.

The bog when you hit the 2/3 throttle at low rpm is removed by the chips. It is pouring in more fuel, as evidenced on the meter, the sound, and the increased thrust.

Imo000

When you change the chips it takes a bit of time the the LH to adjust to the new paramters. When I first changed the chips I hardly noticed the diference but over time (next couple weeks) the engine bacame more and more powerfull.

PorKen

I tried everything that I could think of, but the chips are max'ed out. Any other tweaks added make them ping.

I suppose that I may be pushing it with 6° cam advance, too.

PorKen

James,

It's OK to be repetitive. I am.

It would be interesting to try keeping the Temp II tweak (disables 3° retard at cruise/idle when coolant warm), hook the knock box LED output to a reed relay, which would enable the retard when knocking.

Imo000

Ok I see! How about putting evrything back to stock and then install the chips. Have the LH go throught the learning process and then test the diference. This way you can see how much perfromace are from the chips. Maybe all the other tweakings make the chips less effective or perhaps your adjustmens bring the engine up to the same perfomrance level as the chips. Does this make any sence?