Well we both have Evo VIII's but mine has a IX tranny in it unfortunately.

 

(RPM)*(Tire height)/FD/(gear ratio)/336

2750*25=68750

68750/4.529=15179.9514

15179.9514/1.09=13926.56

13926.56/336=41.44mph

Seems about right to me

However as EVOlutionary pointed out it should be 105.5 at 7k in 4th so I would favor clutch slip or electronics error. That doesnt seem likely with a GPS though.

 

Dude. Are you kidding me? Do you mean to say we went through all this and you didn't know that the IX trans you put in your car had a different 4th gear than the VIII trans and THAT is all that was causing what you perceived as a "problem"?

My first post, post #3 pointed that out . . .

 

No...I know the Evo IX has a shorter 4th gear then the Evo VIII 4th gear.

What I'm saying here is my 4th gear is still shorter then an Evo 9 4th gear.

I got retuned this past Tuesday. After we got done dyno tuning, we did a road test to do some data logging.

What we found... I was @ 109mph at 7400rpms in 4th gear according to the data logging program which means that my guage cluster is not off and my gearing is indeed F'd!

Shep assured me it was phyiscally impossible that this is correct when I talked to him about 4 weeks ago after I GPS'd my car in 4th gear @ 97-98mph at 7k. Remember I have 18's and my tire size is 255/35/18.

From what I gathered an Evo IX in 4th gear @ redline is 110 approx. I'm hitting that speed at 500rpms later. Again my guage cluster is not off and we confirmed this with data logging software.

Any ideas? I feel that Shep should have to soak up that costs since this is the 3rd time my tranny has had to go back to him if it goes back. 2nd time it went back was because of a bent input (or output can't remember) shaft that Shep missed the first time I sent it to him. (He said that the only way the shaft can get bent is from launching it which the car was definitely not....) This in turn cost me about $1800 worth of labor and parts to get fixed NOT including the AMS push style conversion I did. ($1200+)

 

That's weak sauce right there!! I hate it when people don't take responsibility for their mistakes. Not necessarily saying that Shep caused it, but it's definitely not an "outside of the box" kind of thought at this point considering all the facts.

Maybe get a recording of what's going on, or a picture. Sounds dangerous, but not too sure what else you can do as it seems like you've pretty much looked into the other possibilities (or lack there-of) of the problem and Shep is having a hard time believing you. Good luck!

 

Can that be right though? Shouldn't a stock 4th gear on the VIII or IX tranny go to about 120mph @ 7k? The 4th gear in the 6spd tranny winds out to about 110 or so @ 7k.

 

I dont know bout all of this but if it really bothers you that much grab a cable and ecu flash bump up your rev limit to 9000 and youll be ok. Unless this car a track car who really cares. How many peopl daily drive their car to 7000rpms anyway in 4th gear, in all 50 states your speeding at that point and if you at the strip bump up the rev but dont start accusing shep of a bad build or because you said it yourself its not slipping and you launched in 1st and banged 2nd just be happy your EVO is operational and not on blocks some where getting a rebuild like alot of EVOM members

 

Actually I don't think your statement has any value here. As far as you're concerned he should go out of his way to raise the rev limit on a car that shouldn't be doing what it's doing in the first place? It's not his fault if the transmission isn't working properly as he's not the one that built it. He did, in fact, pay someone to perform said service and if said service was unsuccessful or of poor quality then he absolutely has the right to dispute the results.

You're apathetic response is questionable at best. So you're saying in random situations when builders mess something up we should just "raise our rev limiters" and that omits all the faulty work?? I don't think so man. If I pay a builder to replace my clutch but they put in a new turbo instead then I should just be happy I got the turbo cause a bunch of other Evos have blown turbos??

I'm not confirming that it's Sheps fault, but I agree with the OP as it IS a problem and he should be concentrating on getting it resolved. If it turns out to be a fault of Shep, well that is not the fault of the OP but of Shep and hopefully he gets it fixed.

 

This is a lithmus paper of how shep can help resolve this problem, or how their warranty works especially this will be the third time.

I would not judge Shep as i have good experience after 2 tranny, but we shall see.

 

+1 Let's see how this is handled.

 

Thats what I'm thinking how can this possibly be right?

Evo VIII 4th gear @ 7k should be about 115-117
Evo IX 4th gear @ 7k should be around 110
The Evo IX MR to hit 110 in 4th gear is around 7400-7500 (my last Evo was an MR and my mph in the 1/4 mile was 111 and I was definitely way past 7k in 4th gear)

9k on stock block? Thats real practical.

 

I'm not sure where you're getting the 4th gear speed @redline.

When I had an 8, 4th gear redlined at ~111 mph. On my 9, it redlines at ~106 mph.

 

hmm... i could chime in a bout 3rd gear but.. i dont know if that will be any help... 3rd gear 7 k stock ix tranny 103

 

3rd gear from a 5spd IX tranny is NOT 103 mph. Try 83 mph.

 

Maybe you're just not reving it out high enough