Featherfoot's ECU project

[Baxman]

I'm in so long as there will be dyno demonstration of the HP gains and there is certainty that those extra ponies won't be munch'n my AT.

[FeatherFoot]

Originally posted by Hotsauce
I don't quite understand the need for economy/performance mode, John C.

In my initial post I covered the 3 modes very lightly.

The economy mode is the mode to use when traveling from LA to Miami for the best fuel mileage and still be able to get out of your own way when needed.

The tow/haul mode is used for towing and will probably be used as the daily driving mode because of the SOTP reward when you punch it to show that Marano that you only look funny.

the performance mode is what you switch to when the Marano wants proof.

any questions??

FF

[SGT.BATGUANO]

Yes,

See my previous post above.

[technocoy]

this may be the most desirable mod that i have heard so far in the performance area, as i can't afford the supercharger right now what with the new house and all. why am i skeptical about the 30hp projection though? everything i've found on ecu mods give about 10hp at the MOST to a stock car. If you can bring 30hp to reality, i will be in for this one (at $350-400). but it has to be consistent on the dyno as well as shown not to kill our babies in the process... I am greatly appreciative of all the people doing these great mods for us all lately!

can you give us a timeline for completion on this thing?

keep us posted

technocoy

[FeatherFoot]

I have a dyno chart of the LS1 before and after,but here is the data. look at the improvement in the upper RPMs.




STOCK FINAL

RPM HP TQ RPM HP TQ HP TQ
4.10 243.42 311.83 4.10 252.97 324.06 9.55 12.23
4.20 250.37 313.08 4.20 259.42 324.40 9.05 11.32
4.30 257.50 314.51 4.30 269.34 328.97 11.84 14.46
4.40 263.63 314.68 4.40 276.18 329.67 12.55 14.99
4.50 270.33 315.51 4.50 283.67 331.08 13.34 15.57
4.60 275.69 314.77 4.60 289.97 331.08 14.28 16.31
4.70 281.97 315.09 4.70 295.45 330.16 13.48 15.07
4.80 286.91 313.94 4.80 302.41 330.89 15.50 16.95
4.90 292.88 313.93 4.90 306.94 329.00 14.06 15.07
5.00 295.45 310.35 5.00 311.62 327.33 16.17 16.98
5.10 299.44 308.37 5.10 315.34 324.75 15.90 16.38
5.20 300.56 303.57 5.20 318.43 321.62 17.87 18.05
5.30 302.33 299.60 5.30 319.78 316.90 17.45 17.30
5.40 303.40 295.09 5.40 320.71 311.92 17.31 16.83
5.50 299.03 285.56 5.50 322.12 307.61 23.09 22.05
5.60 300.80 282.12 5.60 322.40 302.38 21.60 20.26
5.70 296.21 272.93 5.70 319.94 294.81 23.73 21.88
5.80 291.43 263.90 5.80 319.84 289.62 28.41 25.72
5.90 291.12 259.15 5.90 316.27 281.54 25.15 22.39
6.00 286.26 250.58 6.00 314.85 275.60 28.59 25.02
6.10 283.63 244.21 6.10 308.53 265.65 24.90 21.44
6.20 274.19 232.27 6.20 303.18 256.83 28.99 24.56
6.30 267.49 223.00 6.30 301.01 250.95 33.52 27.95
6.40 266.48 218.68 6.40 298.44 244.92 31.96 26.24

[ScottinMA]

John,

For all of us that "don't have a f'n clue" what you posted....Could you please summarize your data?

[psychos2]

stock rpm=6.40 hp= 266.48 tq= 218.68 after mod rpm= 6.40 hp= 298.44 tq= 244.92 amount of improvement hp= 31.96 tq= 26.24

[SGT.BATGUANO]

"Before mod" rpm x 1000, "before" hp, "before" torque, "after mod" rpm x 1000, "after" hp, "after" torque, "after"hp gain, "after"torque gain. In that order for an LS-1 motor.

[ScottinMA]

Originally posted by psychos2
stock rpm=6.40 hp= 266.48 tq= 218.68 after mod rpm= 6.40 hp= 298.44 tq= 244.92 amount of improvement hp= 31.96 tq= 26.24

Thank you!!

[Cyrk]

Any updates?

[xdfarrx]

Feather-
Clearly an LS1 is a more robust powerplant then our 3.5 (correct?). I suppose we could assume some respectable gains but is 30hp realistic? I really look forward to seeing the data, and am certainly interested in the ecu mod. Especially the improved fuel econ if that is viable. Thanks

[chumone]

Probably no updates for a few days--everyone's at MOAB.

[MZ-N10]

i wonder wat would happen with the moab counter hits 0.....
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[FeatherFoot]

Originally posted by xdfarrx
Feather-
Clearly an LS1 is a more robust powerplant then our 3.5 (correct?). I suppose we could assume some respectable gains but is 30hp realistic? I really look forward to seeing the data, and am certainly interested in the ecu mod. Especially the improved fuel econ if that is viable. Thanks

It would seem so. However as long as it's possible to get 500HP out of a 2.5L 4-cyl stranger things have happened. LaPole had a couple of chips modified he sez he got 50 to 60 hp out of his '94 350. We never know what is possible 'til we try.

FF

[chumone]

Any progress on this?