I installed the Green and Revolvers and now I am looking for a timing and fuel map to start to tune with. I have AMS 780 injectors and all other supporting mods.

I just need a starting point from my base 94170015.

Any help would be appreciated and will certainly save time and money on the dyno.

Thanks in advance.

Paul

 

stock map is a good starting point............

 

Ok so I have started with the STOCK map since there was so much help available.

Here is a couple issues I am having.....

1) SAS is set near perfect but the car still wants to die after going into neutral at a stoplight.

2) ICS steps are between 30 and 40 at idle is this normal? Seems high to me.

3) Idle load is in the mid 40s to low 50s. Is this normal? Seems high to me.

4) Idle timing hovers between 6 and 19 degrees. Why won't it stay steady?

If anyone needs idle logs I have them.

Yes the car was warmed up to proper operating temp.

Please assist.

 

better go way down on the timing, the revolvers do not like timing!!!! As for the idle issue, i would just try uping the idle to at least 1200 and make it a little rich.

 

Thanks for the reply.

I have the idle set at 950 w/o AC and 1050 with. Once the car is warm it holds idle well.

The timing at my 50 load is a little high guess. I will try lowering it to what???

 

Save yourself some time and frustration by taking out those cams and put in some HKS 272s. I had nothing but trouble with the Revolvers. Refer to my review that probably played a part in them not being around anymore...

My .02

 

I read your post and I certainly feel for your frustration. I got these cams for the purpose of the low end torque.

I will stick it out a while. I rather like the challenge.

UPDATE:
I decreased timing in the >60 load valuse and below 1275 RPM. Idle is stabilized a lot now.

The car is still dropping rich at neutral roll. Then over compensates and goes way lean. I think I might adjust the ISC steps in the higher temp valuse and see if that helps.

 

So I have been working on my injector scaling and I belive I finally got it nailed down. The car starts easily and holds idle at 965 rpm with 14.7 AFR on the wide band.

Now the issue is getting it to stop droping rich and over compensating to lean....back and forth and then trying to die. This happens almost every time I come to a rolling stop in neutral.

Any advice on this would be nice.

No there isn't any vacuum or boost leaks.

 

Have you adjusted the BISS? It sounds like you did with the SAS mode but making sure its a little over cranked seems to help. The other thing with the rich/lean swings is sometimes you get the trims close and the O2 wants to foul things up. What scaling and latency? Something in the neighborhood of 650 on the scaling and .840 on the latency at 11.7v seems to be reasonably close. Here is the latency for a set of FIC 750s (780s actually):

3.312
1.68
1.032
0.84
0.552
0.456
0.36

One other thing on the big cams that helps is putting the idle into open loop and setting the AFRs to mid to low 13s.

 

I´m sure you can do fuel by yourself. It´s too different from car to car as to just copy a base map; start with the stock one and work with your wideband.

As for timing maps, check this post:
https://www.evolutionm.net/forums/ec...ming-maps.html

Razorlab´s timing map seems a pretty good starting point for your car. I would NOT run the stock map as a base, it only goes to 260 load, you need to rescale that to at least 300.

 

My map is scaled to 300. I believe my map is pretty good since I saw 0 knock before the cam install. I am sure I could find some power but I want to nip this stalling issue. I will post it here in soon.

I did mess with the BIS but I used SAS in evoscan to get it back into check. The car will idle at about 900 with the SAS activated.

My injectors are scaled as..... 696

Latencies are.....
4.6875 3.504
7.03125 2.184
9.375 1.368
11.7188 0.888
14.0625 0.6
16.4062 0.408
18.6768 0.288


I tried to use a lower scale value (650) and the car won't stay running.

I logged it at idle today an noticed my MAF Hz value jumping around from 0 to 50+ and even to 120ish at times. Maybe the issue lies here. My MAF settings are all stock. I am running an HKS suction pipe with a K&N filter.

If this helps here are my performance mods
AMS 780 cc's
AMS fuel rail
Walbro 255
HKS DLI II
FP Green
Ported stock mani
Gasket matched head
Revolver cams, springs, retainers
HKS upper and lower intake pipes
HKS suction pipe w/K&N
APS dual vent BOV
Apexi AVC-R
Apexi AFC-II (All settings are zeroed out) (It is just a light show now)
Ported tubular O2 housing
Megan DP and TP
5 Zigen fireball cat back


Thank you all for your assistance. I want to be one of the first to overcome these Revolver cams. I know we can figure out how to get them to run on a stock ECU and MAF.

 

There no problem to get to run on stock ecu!!! a guy on here named pedro had them with 1200's and a ams 35r. made like 440 on 93. they have a smoother idle if timing is in the 5 ranged and lower timing through the load cells, esp up top. for some reason and (i think its because of the lift of the cam) they dont like timing at all! But they will idle fine on the stock ecu with a ajustment!

 

Here are my current settings.

I did change the latencies as per the requests.

 

man Paul thats a lot of pretty colors, when you get it figured out maybe you can help install and tune my car with BC 272's

 

This scaling seems to work pretty well for me..... 696

at these latencies....
3.312
2.04
1.296
0.912
0.792
0.6
0.336

Idle is steady now and as smooth as revolvers will allow.

I cleaned the MAF and flipped it upside down and things have really gotten better. Hz stay consistant at about 60Hz

I rechecked the SAS and the car will still idle at 950 with it activated. I turned it out a tad and it idles as close to my setting of 965 as I can get it.

The "Fuel trim low (LTFT) still won't change from .1008. I will drive the car like this for a coulple days and see if I can get it to respond.

STFT is bouncing between +/- 5% so it is nearly perfect.

I lowered the timing in the 60 load at 1250 to 6 and in the 80 load to 11. The car idles in the 50 to 70 load catageroy at about 1000 rpm.

Now to try and solve the driving to a stop idle fluctuations......HMMM