please forgive me as im new to haveing to tune with a laptop, im used to carbs, wrenches, and screwdrives, lol. I've been reading a lot, and using a little: Tunercat (only set gearing change and shift points right now), Datamaster, FreeScan, and Logworks.

anyways, first stupid question the i've been looking for the LT4 knock module for my 1994 camaro, the one one i saw on summit was for the corvette, im sure this is the right one, just want to verify that.

moving right along, the car (in signature) seems to run pretty good, i am running the LM2 wideband and it seems to be running on adverage about 12.6 with a bit of fluctuation, i think that this is right about where i want it since i will be running nitrous.

Throttle response seems a little slow and i know it can pull a little harder. I just did one datamaster log while driving across town with a short WOT near the start of the run. It seems to be knocking like crazy while accelarating, i know i have to check all the plug wires and exhaust. No wires are touching the headers and all the header bolts seem to be tight. Im not sure how to interpret the knock count on this car though. The run started with a Knock Count of 6759 jumped up to 7020 when i went WOT and by the time i let off WOT it was at 10588 and at times had pulled 10deg of timing by the end of my 15 minute drive to the store the knock count was at 11564. It seems like it is knocking like crazy, some of it may be real, some may not, i dont know. I know the least ammount of knock is the best but how do i figure out what is acceptable when working with numbers in the 5000-10000 range, what is the normal starting point? Also besides the LT4 module, and making sure everything is tight, how do i go about fixing knock.


Also how should i be adjusting my timing. I know on my old 72 i just go out with a light and try to add in 1-2 degrees at a time and watch my slips on the track (or the seat of the pants method on the street) to see where my best performance is, and if it starts getting hard to start, performance drops, or pinging at all i back the timing off. But how do i go about this when im dealing with these huge tables in tuner cat, and what should i be looking for?

Sorry if these are basic tuning questions, i have read through quite a few threads on various sites, if there is something that i missed or would be helpful to read can you please point be in the right directions (link would be great) I'm new to all this style of tuning but definatly learn fast. I want to get the N/A tune dialed in, im running the HSW interface with the N2O that atuomatically pulls the timing and adds the fuel when the N2O is being used so for now i need to figure out how to get the N/A tune/timing dialed in.

I also have a data master file and my tunercat .bin file if someone could look at them and give me some advice, im still trying to figure out how to interpret them all.

Thanks

Doug[/align]

 

okay so after taking a closer look at the datamaster log i have seen a few patterns emerge, there appears to be only a few instances of knock recorded, which i have clipped and pasted below, other that what is here most of the rest of the Knock Retard is less than 1.5 degrees and appears to be fairly random, i think it is best to start with the KR that comes from recorded knock and produces the biggest retard. Looking at the data below and if i understand all this tuning stuff so far it looks like i should go into the spark advance tables in tuner cat and drop the values at 90 and 95 MAP and 4000rpm by 1-2 degrees and record another run and see if i still get a knock and repeat this again at 60 and 65 map and 3200rpm. Is this the correct way to go about it.
Record #TimeStampKnock CountSpark RetardSpark AdvanceRPMMAPTPS %Speed
Units>mSCountsDegreesDegreesRPMKPaPercentMPH
9272038146759040352570.546.321
92820403570203.934397592.394.123 4 KR at 92 map acel thru 3900 rpm 34 spark advance
92920425470202.734347594.510036
93020446970202.73331509610031
93120468770201.834305097.110030
93220490770201.234305096.310032
93320512670201.235325096.710033
93420534570200.835337596.710035
93520556270200.63635259610037
93620578170200.436362594.910039
93720599770200.437382594.510040
93820622070200.337392594.910042
93920643670200.337405094.110044
94020665672625.132422595.210046 5.1 KR at 95 map accel thru 4200 rpm 32 spark advance
94120687178821027435095.210047
942207090863210.228445095.210049
943207307863210.527460095.210051 10.5 KR at 95 map accel thru 4400 rpm 27 spark advance
94420753786328.130475094.910052
94520774586326.531487593.710054
94620796586325.23349759310055
94720818286324.234505092.610057
94820840486323.434520096.310058
94920862186322.836527592.310060
95020883786322.336547592.310061
95120905486321.637557591.910062
95220927486321.437565095.210064
95320949386321.238572594.110065
95420971486320.938587592.610066
95520993086320.938590094.510067
95621014686320.838605094.910068
95721036686320.738595093.710069
95821058886320.737460095.210072
95921080286320.737412593.710072
96021102586320.73741509610073
96121124088524.133422594.910074 4.1 KR at 95 map steady 4200 rpm 33 spark advance
9622114579333102842759310075 10 KR at 93 map steady 4200 rpms 21 spark advance
96321167610588102742759610076
964211896108411031432574.948.277
96521211310841044410028.118.477
96621233310841013305016.6077


Record #TimeStampKnock CountSpark RetardSpark AdvanceRPMMAPTPS %Speed
Units>mSCountsDegreesDegreesRPMKPaPercentMPH
1334292703108410.541312560.537.334
1335292924108410.441320060.237.335
1336293143108410.442325059.137.336
1337293360108410.442330057.637.337
1338293578111005.636297561.337.339 5.6 KR at 62 map decel thru 3000 rpm 36 spark advance
1339293795111004.33423757237.338
1340294016111004.33324007237.339
1341294233111003.135245072.337.340
1342294454111003.136245069.434.540
1343294670111001.939245061.63141
1344294890111001.340245059.129.842
1345295104111001.438217559.429.842
1346295326111001.536200064.229.842
1347295542111001.437202563.92943
1348295761111001.439200063.92943
1349295980111001.240202562.827.844
1350296200111001.141197560.226.744
1351296417111000.64319505523.544
1352296636111000.643190053.523.544
1353296853111000.443190052.822.745

Record #TimeStampKnock CountSpark RetardSpark AdvanceRPMMAPTPS %Speed
Units>mSCountsDegreesDegreesRPMKPaPercentMPH
2319507827111000.64134256240.438
2320508049111000.64135006240.839
2321508265113193.536330064.240.840 4.2 KR 64 map 3300 rpm 32 spark advance
2322508482113194.232250076.440.841
2323508702113193.234252577.540.841
2324508922113192.635255075.340.442
2325509138113192.435255074.938.443
2326509361113191.738257567.234.143
2327509575113191.539257565.332.944
2328509797113191.240257563.132.944
2329510013113191.835215069.432.945
2330510231113191.835210070.532.946

Record #TimeStampKnock CountSpark RetardSpark AdvanceRPMMAPTPS %Speed
Units>mSCountsDegreesDegreesRPMKPaPercentMPH
2695589950113191.337347577.950.638
2696590169115646.13335507651.439 6.1 KR at 76 map 3550 rpm 33 spark advance
2697590385115644.734365075.351.440
2698590605115643.835377574.251.442
2699590822115643.238392573.551.443
2700591041115642.639400072.351.444
2701591258115642.639412570.151.445
2702591480115642.24041507251.446
2703591695115642.435327580.851.449
2704591915115642.234295084.251.449
2705592133115641.935292576.843.150
270659235311564140292560.932.250
2707592567115640.64128755530.251