After finally getting on the dyno with the new motor, I am not sure where to proceed from here. I didn't print out the dyno but I drew a sketch of what it looked like. You can see that the A/F ratio gets leaner after 4000 rpm and the horse power just hits a wall and levels off. With the cam I have, peak should be about 6800 rpm. And the torque just starts off high and plummets after that. In Winbin, the Power Enrichment vs. RPM table I am maxing out the values. I can't go any higher so this leads me to believe that I need larger injectors than the 30# ones I have now. Fuel pressure is set at 46psi. Then I could lower the values in the table to have more room to tune. I have just gotten a new laptop and couldn't get it to work with Craig Moates Software so I didn't log the run for pulse width's. I started with the 89 ARAP PROM and went from there. Here is a link to the dyno image and the bin I am using

http://north.ecc.edu/ermer/dyno.gif
http://north.ecc.edu/ermer/377-07.bin

Specs on my motor are as follows:
350 stroked to 377
Brodix -10 heads flow 306cfm @ .700
Miniram Ported to Fel-Pro 1207 gasket
Comp Cams Solid Roller 242/248 .613" lift
10.5:1 compression
Hooker Long Tubes
30# SVO injectors
Yank Super Thruster 3500 Converter

Any suggestions as to where to go next? Should I make one run and log it to get the PW or do I just get new injectors. Part throttle is great as the BLM are all between 122 - 134. Thanks.

 

That's not true. The 30lb injectors can support well over 400 to the rear wheels ... WELL OVER 400. Right now you only have 335.

First - I downloaded your bin and in TunerCat the RPM table is not maxed out. The values are at 50% in the upper RPM range. I have noticed that programs like GMEPro will have double the values than what TunerCat shows in the PE tables. What proram are you using? TunerCat will definitely allow you to add more.

Second - Your next option is to start increasing the PE vs. Coolant table. Subtract a given amount from the entire RPM table and then add that amount to the entire PE vs. Coolant table. This will give you that much more room to grow in the RPM table.

Yet another example of how MAF resolution comes into play since you have to make up A LOT of fueling in the PE tables in order to get to 14.7:1 ... and then add the normal PE fueling to bring it down to 13.0:1.

Tim

 

Wow those are strange results .
Max HP @ 4800
MAX TQ @ 3000
Those look real funny being that you are running a mini ram, huge heads and a 3500 stall..
I see that trax has a copy of your bin, He should be able to get you straightened out.
By the way nice combo should be wicked.

 

Thanks guys. I was using WinBin and the values were maxed out at 255. I'll get TunerCat and start using that. WinBin has been a little buggy besides. I looked at the tables on TunerCats web site and there are several Coolant tables for the 6E. Which one should I add to:

PE %Change to A/F ratio VS Coolant
Open Loop A/F Ratio %Change VS Coolant
Accel Enrich Async Pulses VS Coolant
Accel Enrich Async Factor VS Coolant Temp

or are there others.

Hopefully I can get that hp curve to keep increasing to 6800 rpm where is should be at about 400rwhp and get that torque curve flat like it starts out.

 

If you want to richen it up during PE then you'll want to use the PE %Change to A/F ratio VS Coolant.

Tim

 

He posted a link to his BIN in the first post.

Tim

 

Thanks Tim. I hope that all the motor wants is more fuel and it is not some kind of other problem why the dyno graph looks the way it does. Now that I'll be able to add more fuel, I will be able to play with the PE timing also and see what it likes. I will be happy with a flat torque curve at 450rwt and a nice hp curve that goes over 400 rwhp. I hope that with just the tuning I can get there.

By the way. I didn't mention it in the previous posts but my first dyno run was 320rwt and 285rwhp. I did 5 pulls to get the 446rwt and 335rwhp. The base timing was way off and it was very lean to start. It just shows you how much tuning makes a difference. Too bad I won't be able to get back on the dyno untill spring. Thanks again.

 

You may also want to look at the F/A Adder vs. RPM table.
Also to get things looking close ..
see where your best a/f ratio is - see what the pulse width is at that rpm and load. Try to match that pulse throughout the power curve. should get you close.
But beware you do not want to exceed 8.3 ms at 6800 because you will be past 95% duty cycle.
If you find your self at that point or higher you may want to raise fuel pressure but we'll deal with that if you need to.

 

I'll take a look at that table also.

Does increasing fuel pressure modify the A/f ratio across the entire rpm range or will it only decrease the PW? I guess I'll do some searching for info. Thanks.

 

I'll take a look at that table also.

Does increasing fuel pressure modify the A/f ratio across the entire rpm range or will it only decrease the PW? I guess I'll do some searching for info. Thanks.

 

Fuel pressure will have no effect on WOT PW. I was saying if your duty cycle is getting to high then you can increase FP allowing you to use less PW.
But I would not use that as a tuning tool unless you have to.
If you made max 4xx lbs of torque at 3000 see what your PW is there and try to make rest of curve matc that pulse for starters using the F/A ADDER VS. RMP TABLE.
The coolant table will raise PW across the board , if your lower rpm is ok then don't use that table.