Dyno tune results from 2.6" pulley and 50/50 meth
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2004-2007 Cadillac CTS-V Performance Mods Discussion, Dyno tune results from 2.6" pulley and 50/50 meth in Cadillac CTS-V Series Forum - 2004 - 2007; So I took my car into Synergy Motorsports to get tuned after putting a 2.6 pulley on the maggie and ...
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    OneFast V is offline Cadillac Owners Enthusiast
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    Dyno tune results from 2.6" pulley and 50/50 meth

    So I took my car into Synergy Motorsports to get tuned after putting a 2.6 pulley on the maggie and adding 50/50 meth. Previously i had done a baseline with just the maggie and a stock 2.8 pulley and magnuson tune on a dynojet and got 452hp/425tq.


    Well the results on the dynapack were very different. baselined around 400hp/414tq with the meth and 2.6pulley still on the stock magnuson tune. Rick was able to get another 30hp and 30tq to put me at 430hp.443/tq.


    Question #1: i did not realize that these two dynos would read such different numbers. I expected at a minimum to be around 480/450. Also rick's dyno chart only reads up to 6200rpm, not sure why he didn't run it to 6700rpm.

    Question #2: should I go back to the dynojet i first got a baseline on to truly see what the appreciable gains were from the mods and tune?

    Question #3: rick recommended 100% meth and that he could pull out another 20-30hp, thoughts?

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth


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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    I read that article, good read. But i wouldn't expect a 12.5% hp difference (probably even greater due to my smaller pulley and meth that had been added during the dynapack baseline)

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    There is an example table at the end of the ariticle that shows a 10.5% difference between Dynapack and Dynojet numbers depending on whether you are comparing SAE corrected with uncorrected. Additionally, the article suggests that Dynapack dynos require periodic recalibration and routine maintenance.

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    I'm no expert, but I've had Meth a few years now. In order to get another 20-30hp with 100% meth, I'd assume he'll advance the timing quite a bit. If so, you'll be very dependent on the meth for knock suppression. If the meth should fail.......

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Quote Originally Posted by Twitch View Post
    I'm no expert, but I've had Meth a few years now. In order to get another 20-30hp with 100% meth, I'd assume he'll advance the timing quite a bit. If so, you'll be very dependent on the meth for knock suppression. If the meth should fail.......
    That being said, you've run meth for a few years with no failures correct? My system is quite basic right now, which i like. I understand the risks associated with it but its a risk/reward type balance sort of game with any modifications. I think it would be about 2-3 degrees of timing to get the extra hp right?

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    I did have a failure (broken wire). But I have a gauge that lights up if I get 2* KR so i backed off right away.
    2-3 degrees for 20-30 hp? Not even close.

    I know there's always a risk. I'm just saying, adding enough timing (if that's what your tuner is doing) to get that gain is a big risk. It may be worth it for you, I'm just letting you know. Good luck either way.

    Tony

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Midwest dynos give you more hp, don't they Tony?
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Quote Originally Posted by Twitch View Post
    I did have a failure (broken wire). But I have a gauge that lights up if I get 2* KR so i backed off right away.
    2-3 degrees for 20-30 hp? Not even close.

    I know there's always a risk. I'm just saying, adding enough timing (if that's what your tuner is doing) to get that gain is a big risk. It may be worth it for you, I'm just letting you know. Good luck either way.

    Tony
    Good to know. I'm happy where I'm at and I think I'll just stay here. But I have read that roots blowers need much larger nozzles than centris or turbos. any thoughts anybody? I've read almost twice as much to help control iats.

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Do you have E85 up there in Nor Cal? There are a few stations here and I have had good luck tuning my last car to run on it. 26psi on a stock turbo Cobalt SS and about 420lbs-torque at the wheels.

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Quote Originally Posted by RyRidesMotoX View Post
    Do you have E85 up there in Nor Cal? There are a few stations here and I have had good luck tuning my last car to run on it. 26psi on a stock turbo Cobalt SS and about 420lbs-torque at the wheels.
    I don't really pay attention to much of the gas stations. But it doesn't seem readily available. I actually have 105 octane gas more readily available from a gas station across the street from my house.

    EDIT: Just looked and there are 3 stations in San Jose and one is close to my work. It's also only $3.09/gallon but i know you see reduced fuel economy with e85. how much of a drop would I see?

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    E85 has 30% less energy than E10. The change in MPG will vary, but should follow the energy content reduction.

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    I would throw it on a dynojet just so you get apples to apples comparison. Also not a fan of meth, really like using whatever gas will be in the car, just not worth risking the motor imo

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Quote Originally Posted by OneFast V View Post
    I don't really pay attention to much of the gas stations. But it doesn't seem readily available. I actually have 105 octane gas more readily available from a gas station across the street from my house.

    EDIT: Just looked and there are 3 stations in San Jose and one is close to my work. It's also only $3.09/gallon but i know you see reduced fuel economy with e85. how much of a drop would I see?
    As darkman said you will see about a 30% drop in fuel economy which is correlated to the 30% less energy. The reason why I liked to use it in my car was that
    #1 it is alcohol based and not petroleum based which means it's chemical compound carries oxygen molecules.
    #2 it is very knock resistant. I know some people getting about 26 degrees of advance, now granted that is on a cobalt, which is a 2.0 liter (either supercharged or turbo) and it will not make the same amount of heat as a big ass V8 with a roots on top so your results may vary
    #3 it is alot cheaper than race gas, 30% less economy for 60% less cost but very similar performance? I'll take that all day long.

    Some people say it cools the air charge or whatever, which in my car (Direct injection) was negligible at best. If you want to cool the air charge meth or an intercooler are you options. E85 is basically a very cheap substitute for race gas, but where you get consistency in a race gas all year long, you get different mixes in E85 all year depending on the season. There are all sorts of pros and cons. For me, on a track, in my cobalt SS turbo, with a blended 91/E85 fuel about 50/50 I got roughly 6mpg. But that was hard driving all day. On the street I saw about 5mpg less as opposed to 91. And my 04 cts-v gets almost the same fuel economy as my cobalt ss

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    Re: Dyno tune results from 2.6" pulley and 50/50 meth

    Quote Originally Posted by rand49er View Post
    Midwest dynos give you more hp, don't they Tony?
    It's like the S.A.T. They spot you 50hp if your car can make it over the hump on the dyno

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