Hello Guys,
Just wondering if anyone else got the same problem-dissapointment? I have an 04 G35 Sedan. I have install the following: K&N Cold Air Intake, Motordyne Space, Stillen Headers and Exaust (Gen2) and a UTEC. I took my car to japtrix in Palm Beach, FL. They could not get more than 225 HP on their Mustang Dyno. After running it many times, Roger, gave up and told me, "it is what it is." He told me that something was holding down power to the vehicle; he showed me other G35s AT 03-04s results after tuning them and where on the 240s+ hp. Has someone else got the similar low results with a car similar to mine?

 

I "think" the mustang dynos read low vs Dynojets. Can you run the 1/4 somewhere? That might be a more true indicator of what you are doing. ie. if you have reasonable tires and pull something like a 13.7-13.9, you might be making some damn good power!

 

I have not run 1/4, but 1/8 and it was before tuning the utec. Honestly, I got so dissapointed that I am planning on getting another car soon. However, I would like to know is someone else has experienced a similar problem. What bothered me was not the low numbers because compaing them to another Dyno (I think it was a dynomite or dynometer, but definitely not a Dynojet), I got 260 on that one. What bothere me was that they told me that other g35s- 03-04 AT- came stock with 220+ hp and after tuning them, they were on the low 240 hp. Definitely is that is the case, something in my setup is killing power on my car.

 

first off, do u have a leak of any kind anywhere? or something was not installed properly. second, what was ur 1/8th mile time???

 

I would look at your spark plugs, and do a compression test. Sounds like there is something wrong to me.

 

that sucks man. it def might have something to do with their dyno. did u baseline at 225? i have a utec also was able to push more than 250 to the wheels with a tune...

 

Pleas apologize my ignorance, but what is a compression test? How can I check for leaks? Do you recommend any tuner? Thanks,
M

 

Initial baseline was 201. Same specs on the car, but with SSV Manifold and no motordyne spacer. After removing the SSV manifold and installing the motordyne spacer the numbers jumped to 219.x. After tuning it, the highest number was 225.9 hp.

 

What type of dyno did you use?

 

That's almost a 25hp gain... did the other cars baseline at 200 something and end up making 240+ after the tune? What's the torque?

 

Turbo the thing =] or supercharge it, All the extra boltons prbbly cost you the price of a Turbo or supercharger unit. Im prbbly gonna start with intake and exhaust first.

I found out on my g35x they cant do Twin turbo, no room cause of the front diff. Maybe single with 6-8psi, or a Supercharger more reliable but always on demand =]

 

well obviously, that kinetix SSV did not do u good. but all of your numbers seem pretty low. what did u run at the 1/8th mile?? that will tell me alot considering thats the local track here and i know it like the back of my hand and cars times on it.

 

I think he was asking if you did a baseline before any of the mods?

 

A compression test is when they pressurize each cylinder to see how much air it holds and how much is leaked through. If you have poor compression you could be loosing a lot of power.

 

where in West palm are you located ?