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ms4 dyno

This is a discussion on ms4 dyno within the Dyno Information forums, part of the Racing Forums category; i got my car dyno tuned today! it made 401hp anf 358tq, is this good for my mods? i have ...

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    Member 35thz28camaro's Avatar
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    2002 z28 camaro

    ms4 dyno

    i got my car dyno tuned today! it made 401hp anf 358tq, is this good for my mods? i have an 2002 a4 with with an ms4 cam, LT's, flowmaster cat back, slp underdrive pulley, slp lid, fuddle 3600, and 373's

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    Junior Member jz28's Avatar
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    damn. nice numbers.

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    Member c5z28's Avatar
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    very nice let us know your quarter mile speed, hopefully some solid 12's

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    Member cdz28's Avatar
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    damn those are good numbers congrats

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    JUISSED Midnight02's Avatar
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    With that cam, stall and good traction (it would probably take drag radials), the car should be good for a high 11 - low 12 second 1/4 mile.

    The dyno numbers are very good and I bet that the car pulls like a freight trane up top!

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    I flame retards CamaroFan71's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    i got my car dyno tuned today! it made 401hp anf 358tq, is this good for my mods? i have an 2002 a4 with with an ms4 cam, LT's, flowmaster cat back, slp underdrive pulley, slp lid, fuddle 3600, and 373's
    Might squeeze out a few more ponies if is had a magnaflow catback. I hear flowmasters are actually restrictive.

    "trane" HAHAHAHAHA

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by CamaroFan71 View Post
    Might squeeze out a few more ponies if is had a magnaflow catback. I hear flowmasters are actually restrictive.

    "trane" HAHAHAHAHA
    a friend of mine has texas speed true duals, we both had the same person tune our cars, and our #'s were the same

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    those are some good numbers...hows the drivablilty?

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    Moderator Firebirdjones's Avatar
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    Did you lock the converter up for the dyno run?

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    Senior Member OnEbAdReDSS's Avatar
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    Quote Originally Posted by CamaroFan71 View Post
    Might squeeze out a few more ponies if is had a magnaflow catback. I hear flowmasters are actually restrictive.

    "trane" HAHAHAHAHA
    I gotta say it now... the flowmaster cat backs aren't good they are restrictive... if you can find a Flowmaster 40.. the old school muffler they aren't restrictive at all remember they are only a 1 chamber..

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    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by 2000SuperSportMaro View Post
    I gotta say it now... the flowmaster cat backs aren't good they are restrictive... if you can find a Flowmaster 40.. the old school muffler they aren't restrictive at all remember they are only a 1 chamber..
    Not true. I've had various flowmaster kits, different pipe diameters, various style mufflers,,,and compared them with magnaflow, spintech, loudmouth one and two, mufflex, dynomax, Edelbrock, and a couple other mufflers I can't recall,,,but I have a spread sheet with them all listed and the things we found.

    To make a long story short,,,as long as the pipe design and diameter stayed the same,,,,the car didn't care what muffler was hanging on it. There was no noticable difference in the cars performance AT ALL!

    The only time we saw a change was the removal of the 3 inch piping and installing a 4 inch mufflex system,,,in which case the car picked up another tenth and 2 mph. Even that system didn't care whether it had a flowmaster or a spintech on it,,,,car performed the same.

    I have had various designs of the flowmaster as well, and currently run the super 40's,,,,found nothing in that respect either.

    In the end we found that 99% of your exhaust gains will come from the pipe diameter, design, mandrel bends, X or H pipe etc.....

    Probably spent more than $3,000 on this little experiment to find that it's really just the sound that you prefer when choosing a muffler...

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    Moderator Firebirdjones's Avatar
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    Still curious if you locked that converter on the dyno???? I'd like to experiment with that and see what differences there would be,,,maybe determine converter efficiency.

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by peteSS View Post
    those are some good numbers...hows the drivablilty?
    drives really good! better than i thought it would! the only thing i found is it will buck under 60mph if in overdrive, so i have to drop it in drive, other than that it feels great

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by Firebirdjones View Post
    Still curious if you locked that converter on the dyno???? I'd like to experiment with that and see what differences there would be,,,maybe determine converter efficiency.
    yes

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    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    drives really good! better than i thought it would! the only thing i found is it will buck under 60mph if in overdrive, so i have to drop it in drive, other than that it feels great
    More rearend gear would fix that. Generally with a camshaft that big it's not unusual though.

    If gears aren't an option, then maybe playing with the converter lockup may help. Delay the converter lockup in 4th gear until a speed is reached where bucking isn't an issue???? Just a thought.

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    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    yes
    Thats cool. Which fuddle??? Did you go with the mild street version from fuddle or the HP/street version with the larger clutch???

    I just bought a 3400 fuddle, waiting for it to come in. I went with the HP version, for some reason that larger clutch just gives me piece of mind.

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by Firebirdjones View Post
    Thats cool. Which fuddle??? Did you go with the mild street version from fuddle or the HP/street version with the larger clutch???

    I just bought a 3400 fuddle, waiting for it to come in. I went with the HP version, for some reason that larger clutch just gives me piece of mind.
    the street one, i am about to upgrade to a 4000, my tuner told me to come back when i do to play with the conv lock up

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    Make real real sure Johns00Z28's Avatar
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    Sick numbers for an A4, congrats!

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    Member Blue_01_Z28's Avatar
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    Nice numbers, My friend has about the same stuff with that same cam and got 407 down. His surges a little too. I guess thats usual if the tune is just roughed out. Just because it's a big cam doesn't mean it has to surge. It's a voltage deal on the injectors. What happens is that the car tries to bog and the computer throws in a bunch of air to make up for all of the fuel, then the car comes alive and pulls hard and it stays in that loop. That can go away with a good tune. The tuner needs to know how to fix it and a lot of them don't. It has something to do with the voltage that gets to the injectors. The lower the voltage they see, the more fuel they dump in. Doesn't make sense does it?

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    how is the driveability on the MS4?

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