Custom Nissan Altima parts and installations

17 Nov 2014 | Author: | Comments Off on Custom Nissan Altima parts and installations
Nissan Altima

Nissan Altima

Base Dyno Test Results: [view chart]

All broken in and ready to go, it’s off to the dyno for a base line to see exactly what horsepower gains we achieve with our performance enhancements.

We’ll have to admit we were a little disappointed with our baseline dyno, but in it’s defense the car had been driven over an hour just 30 minutes before the test was run. It’s best to do a run on a colder engine for higher results but we were testing it at driving temperature and it was a cool day of about 72.

The highest horsepower we achieved was 193.3 and the torque was 205.4 with the car completely stock. Please note that there is always of loss of power past the transmission. Manufacturer baseline dynos are based on horsepower and torque at the flywheel. We are running our dynos at the wheel.

The average loss of horsepower for front wheel drives is in the neighborhood of 10-15%.

Nissan Altima Performance Enhancements:

Cold Air Intake

We began our engine performance modifications with the addition of an Injen cold air intake . More air means more horsepower. We were really surprised with the immediate difference in accelerator responsiveness and general get-up-and-gone factor! Let’s just say the grin on our face said it all.

The car which had a lot of get-up-and-go to begin with was now get-up-and-gone! All hesitations were eliminated.

We achieved an extraordinary gain with this impressive 3 Injen Cold Air Intake for the 3.5L Nissan Altima in mirror polished aluminum. Injen intakes feature mandrel bent piping and quality silicone hoses taking on both great form and function.

Horsepower gains with a cold air intake

[view results dyno chart] .

The intake took us about 45 minutes to install going step by step with the instructions. If you go with the cold air intake you’ll probably have to remove your drivers side inner fender well to get the filter in place although the instructions stated removal of front bumper would be needed. The ram air intakes wont be quite as involved to install.

Injen intake for the Nissan Altima cold air intake comes with 3 aluminum tubing which is larger than the competition and our dyno produced a couple more horsepower as well.

We did have a mpg gain with the installation of the Injen cold air intake of approximately 4.6 mpg highway at 65 mph and 32 miles per gallon city. Of course we were having to keep our foot off of it, but it is a significant gain over the base gasoline consumption provided by Nissan. All hesitation to the throttle has been completely eliminated which makes this already competitive street machine really get up and go.

Underdrive Pulley

We have installed a light weight crank pulley by Unorthodox Racing of course and we’ll be running a dyno for our results soon. Nissan Altima pulleys.

There have been some articles stating increased engine vibration with the pulleys for the Nissan Altima, but we have not experienced this with the use of an Unorthodox Racing crank pulley. Nor have we experienced less powerful air conditioning and we are here in Texas.

Nissan Altima Exhaust:

We’ve chosen the Greddy cat-back Evolution exhaust system for our Nissan Altima. Our altima is now sporting the Greddy dual exhaust Large 155mm tips and stainless steel mufflers.

Nissan Altima

The exhaust has a deep mellow tone and impressive tips. Besides just looking good there was a definate improvement in performance. The stock exhaust on the V6 has a large crimp just behind the resonator which to our disbelief was smashed in half for about a foot of pipe and a very large resonator. You can definitely hear the car, but it’s more like a camaro.

Very deep tone to this system. Import muscle car? We think so! Sounds Great.

The exhaust was a complete direct replacement the only extra step that we took was to ground the exhaust to the chassis. One of the easiest systems I’ve seen. The car sounds angry. It is a bit louder that stock and very deep sounding and no harsh resonance. If it’s bothersome you can always put sound dampening under your carpet and there’s also a spray application you can use under the car.

But it’s nice being able to set off Mercedes car alarms in parking garages at will. We know with the addition of headers the sound will change slightly, but we’re going with stainless steel for the low tones the exhaust makes.

Greddy Evo exhaust system for our Nissan Altima Seriously deep sounding exhaust and extreme 118mm tips for the Nissan Altima.

The difference in horsepower was very noticeable! The estimated gains from the headers are 21 horsepower. But we have also installed the Greddy EVO exhaust and cold air intake by Injen as well so it’s time to hit the dyno for a few runs.

Dyno’s to be posted soon.

Not only do the headers perform but they are beautiful as well. Super clean welds and highly polished mandrel bent piping stand heads above other brands including Nismo!

18 chrome Zenetti Mystiks and Kumho ecsta Supra 712.

These are our dress wheels when the car is not at the track. We have that deep dish wheel look in a front wheel drive offset and Kumho Tires supplies the sticking power. We have installed Nissan logo center caps on our chrome wheels for a finished look.

The Nissan Altima can go up to a 19×8 inch wheel without any rubbing in the rear but for this urban car we’re going to stick with the 18’s and 8 inch width. We haven’t lowered our car just yet but lowering springs are available and coil-overs for the Nissan Altima and front / rear anti sway bars are available now.

18 chrome wheels with Kumho ecsta Supra 712 Tires. However we have now switched to Toyo tires.

Nissan Altima
Nissan Altima
Nissan Altima
Nissan Altima
Nissan Altima
Nissan Altima
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