I currently have a jwt popcharger, kinetix plenum & cats installed and a stillen exhaust and DC ss headers waiting to be installed. Any one have all these piece installed and had the A/F ratio tested? What was the A/F like?

I don't want to put these last two pieces on and find I'm running really lean. I figure I can put either of the last two pieces on without a problem but when the last piece is added I fear the A/F will be in the 14s.

Anyone with experience please post up.

Thx

 

i have the exact same mods as you right now...except borla exhaust instead of stillen and headers waiting to be put on.......thing is im already in the 14s
till 5500 rpm when it drops to 12.5

 

I have everything that is listed in my sig, my next mod is the Techno reflash. I fear that i am running lean but i have not tested it.

Is there a visual way to test it? Can you tell by looking at your exhaust tips?


Laterz
Aceman

 

runnin lean. shop said it was on the ragged edge. thinkin about tryin an s-afc i. first thing i wanna do is fix the rattlin i have now since the cats were put on. mf'n sucks.

 

theres no way to reliably tell if your cars running lean by looking at the exhaust tips. the only way you could tell if theres almost no carbon build up on the pipes or very very little, as well as too much meaning your rich. this is all kinda subjective and its hard to tell exactly where your at, but it is a rough indicator of whats happening.

 

look at your spark plugs.....thats the only way you can really get an idea on how ur Z is running without a test.... but you do need a reflash......Ive seen dyno's and your probably running in the 14-15 zone..... Im getting mine done before I do any more mods... then an SAFC to fine tune everything....

 

I have the mods listed in my sig installed and my acr idles at around 14.5-15.1 AFR. It dips as low as high 11s or low 12s when I get on it. For those of you who know who gq_626 is, he said my AFR is not bad. Basically where it sound be for a NA Z. He did say I was running a little rich when I am getting on it, but not too bad.

Zach

 

i would suggest that you take your car and have it dynoed....then make your decision....if your that worried put the remaining mods in and have it reflashed at the same time....out

 

when i dynoed here are my results.
only thing i dont have as far as boltons is a plenum

A/F Ratio Tachometer
RPM
13.743 2239
13.78 2276
13.785 2276
13.773 2305
13.861 2305
13.852 2305
13.949 2360
14.008 2360
14.069 2400
14.056 2400
14.038 2433
13.902 2433
13.931 2466
13.843 2466
13.871 2466
13.873 2498
13.798 2498
13.738 2546
13.836 2546
13.885 2588
13.955 2588
13.889 2621
13.838 2621
13.904 2651
13.925 2651
13.887 2651
13.899 2700
13.838 2700
13.849 2742
13.836 2742
13.806 2770
13.715 2770
13.775 2799
13.835 2799
13.674 2844
13.683 2844
13.665 2872
13.784 2872
13.728 2899
13.67 2899
13.677 2948
13.606 2948
13.713 2970
13.772 2970
13.719 3015
13.727 3015
13.75 3040
13.85 3040
13.852 3080
13.839 3080
13.88 3108
13.878 3108
13.728 3145
13.909 3171
14.045 3171
13.94 3200
13.812 3229
13.768 3229
13.758 3251
13.914 3251
13.811 3287
13.776 3287
13.847 3310
13.841 3310
13.882 3349
13.703 3349
13.706 3387
13.734 3387
13.834 3418
13.856 3435
13.856 3435
13.777 3466
13.799 3466
13.766 3491
13.686 3491
13.728 3528
13.834 3528
13.775 3568
13.879 3568
13.787 3591
13.812 3591
13.774 3624
13.825 3624
13.812 3660
13.777 3660
13.79 3704
13.925 3704
13.946 3726
13.838 3726
13.787 3755
13.818 3755
13.754 3784
13.679 3784
13.76 3816
13.883 3847
13.852 3847
13.797 3873
13.618 3904
13.739 3904
13.737 3920
13.696 3920
13.763 3949
13.774 3979
13.806 3979
13.777 3997
13.81 3997
13.671 4036
13.732 4036
13.827 4068
13.846 4103
13.753 4103
13.742 4118
13.795 4149
13.828 4149
13.788 4174
13.526 4174
13.724 4212
13.714 4212
13.725 4242
13.66 4274
13.62 4292
13.541 4313
13.452 4313
13.425 4334
13.397 4362
13.408 4362
13.411 4399
13.469 4420
13.368 4420
13.335 4436
13.441 4464
13.272 4481
13.255 4503
13.363 4518
13.178 4518
13.43 4551
13.28 4551
13.391 4580
13.419 4605
13.319 4605
13.362 4633
13.3 4658
13.373 4677
13.349 4693
13.447 4693
13.342 4723
13.356 4751
13.461 4764
13.406 4781
13.463 4806
13.378 4819
13.568 4837
13.538 4854
13.626 4872
13.459 4872
13.517 4904
13.576 4918
13.499 4932
13.598 4940
13.583 4940
13.658 4977
13.6 4996
13.614 4996
13.483 5019
13.502 5048
13.55 5048
13.405 5072
13.525 5093
13.573 5104
13.363 5104
13.406 5130
13.314 5150
13.392 5170
13.424 5184
13.266 5184
13.357 5202
13.367 5202
13.332 5233
13.289 5263
13.221 5275
13.222 5286
13.153 5286
13.154 5312
13.109 5338
13.079 5338
13.188 5369
13.098 5391
13.054 5403
13.045 5420
13.032 5430
13.034 5452
13.094 5464
12.934 5474
12.97 5474
12.998 5497
13.086 5497
13.027 5530
13.011 5558
12.856 5568
12.95 5581
12.949 5597
12.942 5613
12.777 5629
12.797 5644
12.835 5644
12.805 5666
12.922 5685
12.855 5698
12.888 5714
12.922 5731
12.77 5736
12.937 5758
12.794 5769
12.693 5778
12.743 5778
12.747 5808
12.787 5825
12.753 5839
12.691 5857
12.737 5865
12.75 5874
12.719 5894
12.646 5903
12.602 5917
12.558 5917
12.551 5932
12.557 5952
12.538 5973
12.613 5976
12.64 5994
12.506 6003
12.534 6018
12.374 6027
12.494 6042
12.565 6054
12.528 6054
12.482 6070
12.517 6088
12.445 6101
12.568 6110
12.547 6122
12.496 6141
12.497 6154
12.594 6163
12.66 6163
12.604 6179
12.44 6195
12.404 6208
12.515 6221
12.544 6234
12.409 6243
12.502 6257
12.431 6263
12.581 6273
12.513 6289
12.404 6289
12.347 6309
12.467 6319
12.345 6329
12.371 6342
12.5 6349
12.512 6363
12.401 6373
12.347 6380
12.405 6380
12.334 6397
12.438 6410
12.63 6421
12.568 6434
12.464 6441
12.413 6452
12.406 6459
12.437 6466
12.57 6476
12.336 6476
12.353 6490
12.391 6508
12.515 6515
12.525 6522
12.453 6522
12.296 6547
12.431 6550
12.401 6561
12.443 6568
12.337 6568
12.282 6575
11.264 6522

got an safc and tuned it to hold 13.2 then dip into the 12s

 

the crawford cats that I have make the most diffrence to your A/F ratio according to Techno Square peoples....They said it leans the Z too much in the mid range.....

 

So how bad is it to run lean? How long would you feel safe driving around before getting a re-flash if your A/F was in the high 13s low 14s?

 

i been running this way for bout 10000 miles....

 

I have i/plenum/pulley/test-pipes/injen exhaust and I was running 15.2 a/f's in the midrange, with an average of about 14.7:1 across the board. I was at 14.5:1 at redline. I ran it like this for about 8,000 miles, no problems. I knew I was running lean by the dyno, and the fact that I stopped popping flames from the exahsut and I had NO carbon buildup on the bumpers, which I had before my last mod. I just got a Technosquare reflash, I sent them my a/f table and my mods list I should be at the dyno sat if I can make it...BTW 7100 rpm's is sick.

 

So your A/F reading is coming from the tailpipe sniffer at the dyno shop?
Several guys have said that when they installed the wideband and compared those readings (taken at the cat or testpipe, I believe), it showed the A/F to be approx 0.5 richer than the dyno tailpipe sniffer readings.

An accurate A/F reading would be essential to really know what's going on.

Also, the A/F readings that you posted are indeed after you've made adjustments with the safc unit?