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This thread is for feedback concerning John Hennesey, Hennessey Motor Sports and Hennessey Performance located in Houston, Texas. Please try to keep posts to factual information only.

Customer's Vendor Reviews and Rating should be posted at the Hennesey Review:

http://www.viperalley.com/viperrev/showproduct.php?product=15
 

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Landscaping Professional
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JPH has treated me fairly on several transactions. However, I have not spent much money on mods in general. I feel hot-rodding Vipers is too expensive compared to other cars and I spend mod $ carefully and deliberately. HMS work product ranges from exemplary to highly questionable.

Remember, it's your money until the cash register rings. Be careful.
 

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I don't think I need to tell everyone how happy I was with both my Venom's that John built for me. Nor do I need to tell everyone how smooth both transactions went. I will however share that when I was trying to sell each of those Vipers, one in 1997 and the other in 2001, John probably talked to about 10 different prosepctive buyers, in about 10 different States for me. Even gave one guy his personal cell number to answer all of his questions. That took up a tremendous amount of his time I'm sure. And to top it all off, none of them ended up buying those cars. Longer story short? He definitely went the extra mile for me when I know he didn't have to. If he's half as busy as I am, I don't even see how he did it at all. He backed his product & helped me out in a major way.
 

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Irredeemable
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John did the same for me. He finished my car on time and I NEVER had a problem with it. My 650R ran strong and John checked in with me DAILY while my Viper was in his shop, and long after I received it. When it came time for me to part with my baby, John did speak to a number of interested parties for me. He spent much personal time answer all the questions that tire kickers and buyers can dish out.
I am very glad to see John making good on his promises to others now.
 

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I can't express enough how pleased I am with my experience with Hennessey and my Venom 700R. After modifying my Viper over two years and having problems with my previous motor - Hennessey renewed by excitement of owning and driving my Viper.

Hennessey quoted me a price up front and in writing and my bill was exactly what was quoted. The guys at the shop (Nick, Allen and Victor) finished my car ahead of schedule, paid great attention to detail and delivered performance beyond my expectations.

John Hennessey kept in constant communication and I always knew the status of parts, machine work and the expected completion date.

If anyone is ever in the Houston area - I would be more than happy to take then for a ride in my Venom 700R.
 

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Boostaholic
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I have the hennessey headers and cant be happier with the quality and sound !!
 

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Just a quick note from someone with first hand knowledge. I've sent 2 SRT/10 RAM Viper trucks to Hennessey. Transactions went very smooth. One is complete with the Venom 800 upgrade (dyno number matched what I was expecting and promised completion date was ahead of schedule). The other is a CID upgrade Stroker motor, which should be completed in a few weeks. John has been very helpful in answering all my newbie questions. I get updates via email and phone 2-5 times per week. My calls are returned within one day (if not answered immediately). I've spent almost $100K with Hennessey Performance and am very satisfied to date. I will definitely be sending him another couple of Vehicles in the coming months.

Craig
 

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Schadenfreude Connoisseur
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John has helped me out on several occasions. He has graciously offered use of his facilities and has helped with minor issues on my GTS. Moroever his knowledgebase, willingness to help, and dedication to making outrageously fast vipers makes him a definite great tuner to consider when shopping for a viper tuner.
 

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I have been doing business with John Hennessey for about a year now and have nothing but great things to say about him, his shop and his work. All Excellent. I sent him my SRT last year for the Venom 650r upgrade. He kept me informed off all the progress on it and when it was done It was awesome!!

I now have a second SRT since I crashed my original one in Morocco during the Gumball 3000 Rally in May. This SRT is going back to Hennessey's for another upgrade as well.

I highly recommend Hennessey Motorsports to anyone who is looking to upgrade there Viper or any other car they have.
 

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John Did a great Job of taking care of me when I needed to get the wing for my car.
Shipping was fast, and the wing was perfect. It was a nice piece. /images/graemlins/smiles
Thanks John! :thumb:
[image]http://mywebpage.netscape.com/BLEBYU588/blebyu.jpg[/image]
 

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Much unlike a couple of the big tuners that aren't willing to help you unless you sign over your lotto winnings, John Hennessey has given me great advice about my car on several occasions. I have no negative comments whatsoever. WHEN I do decide to go with a radical setup for my car, it will be on a truck to Houston. John makes explosive power in cars that don't explode! /images/graemlins/thumb1
 

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Vipers should be DRIVEN !
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I purchased a stock transmission at the Texas V-10 Nationals and John had Nick from his shop , help Larry Macedo install it. This transmission preformed flawlessly. I just wish I would have purchased my 1/2 shafts from him. I had his "stock" transmission in my Viper for many miles and numerous passes. My car develops a little more power than stock.

Thanks John.

Cudaman:flag:
 

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Been doing business & known John over 2 years. At 1st I was going to go with LPE but had no personal touch & frustrated results. John contacted me personally about going with him for my car tuning. I was going to go naturally aspirated but thank goodness we couldn't find a crank & that's when John suggested twin turbo. Great suggeston! No regrets! He went out of his way to bring the car to VOI7 for me to use even though the car wasn't yet finished. And then he took it back with him & got it done! Best part about John & his business is the personal communication with him & his mechanics & of course, the results he gives! :thumb:
 

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John was very helpful and spent time helping me pick out a cam grind that suited my needs. The cam arrived as promised and performs great.

He has always answered the phone and taken time to help me thru several mechanical issues. Thanks.




John
 

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I purchased a Hennessey wing from John which I Loved!!! the WIng makes a incredible look for the VIper!

I ordered and Recieved it within a few days as promised. HMS products have proven to me to be top Notch.

[image]http://www.viperalley.com/gallery/data/500/174P2270077-med.JPG[/image]

[image]http://www.viperalley.com/gallery/data/500/174DSC_0042-med.JPG[/image]
 

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John Hennessey and I have been friends for many years and John has always been there for me when I needed Viper parts. We recently had a great transaction for a local member and the client completely loves his new Turbo Viper.
Actually, when it comes right down to it, I owe John money and he doesn't harass me about paying him back. That is what friendship is all about! I know I still owe you buddy and I will forever be in your debt.
 
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