D16z6: 50 trim t3/t4 - Built bottom end - Pump Gas Dyno Tune

[Spent]

This setup belongs to Chris (Calister) of Charleston who brought his car to us for a transmission rebuild and a retune. Apparently his setup was tuned a couple of years ago by a different tuner. He was only expecting a touch up to compensate for wear and tear on the motor and turbo but came out with more power and better gas mileage.

For the record, if by chance you know who tuned this car prior to us then please keep that information private. We don't call out other tuners or shops out by name. That's something that stays between the customer and us.

Stock D16Z6 head (it's a vtec head for those who don't know)
D16Z6 Block
Precision .60/.63 t3/t4 SC50 trim turbo
Eagle Rods
9:1 Wiseco pistons
Block Guard
Skunk2 Intake Manifold
60mm throttle body
RC 750cc injectors
Jackson Racing cam gear
GO-AUTOWORKS Manifold
Tuned on Crome Gold

The gains down low are attributed to a/f ratios more than anything else. The gains up top are slightly due to fuel and mainly ignition timing.

Stock tune fluctuating between 19.1-20.1 PSI vs TDC Tune @ same boost level.

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/Chris_Red_Civic.jpg



Yes, that's the back of my head in the background.
http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/4-3-101.jpg


http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/4-3-10.jpg

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/th_360whpRed_Civic.jpg (http://s672.photobucket.com/albums/vv89/tdcweb/eBlogger/?action=view&current=360whpRed_Civic.flv)

For those wondering how the better MPG's comes about:

When we were tuning partial throttle, we noticed that in the columns that pertain to cruising and light load, the a/f ratios where in the low 12's. I moved that closer to 14.6-14.9:1 a/f ratio where they should be. By doing so, there is a savings in fuel of approximately 20-25%. Assuming that Chris drives his car like a normal car and stay out of boost for normal city/highway driving, then he should consume 20-25% less fuel than before. It will simply boil down to his driving style and based on what Chris mentioned, it's on the conservative side.

[Spent]

LOL, no love for the little single cam that could. This car was a blast to test drive and in case you are wondering how turbo lag is on this single cam 1.6L, to my own surprise it's practically non-existent.

[SlowOhFoh]

just curious as to why you stopped... plenty of guys making over 400hp on 93 with vitara pistons and turbotoys rods in those things. also wonder how the 59300 cam would help with spool time.

[TopDeadCenter]

Usually, the customer designates the boost level that they want to tune at. Chris wanted to tune at no more than 20 psi, so that's where we stopped.

The Zex 59300 is a good cam, but much better results can be had with the Bisimoto Lvl 2.4 turbo cam. Several dyno tests have shown gains of over 40 whp at the same boost level over a 59300. Stock cam idle and spool characteristics are retained.

Regarding spool time, the Bisimoto cam and both the Zex 59300 and 59500 are the only available cams that offer decent power gains, without loosing the quick spool of the stock cam.

[Spent]

I've heard mixed reviews on the 59300 cam. It mainly depends on drive-ability vs power.

It really only had 3-4psi left of usable efficiency on the turbo and the customer didn't deem it worth it. I would like to see springs and retainers, a 60trim and 9k rpms down the road.

[SlowOhFoh]

isnt it like twice the price? you thrown the idea of a stock JDM D15B cam? its supposed to be between the 59100 and 59300 IIRC. Bisi stuff is good but last time i saw it, which has been a few years, it was pretty expensive.

[SlowOhFoh]

i guess im also used to people being more worried about the gas it'll run on and not giving a crap what the boost level is lol

[TopDeadCenter]

It is expensive, but for the results, you can't go wrong. We are Bisi distributors, and can usually sell those parts at a considerable discount.

There is a lot of debate around the D15B cam, as there are a few versions of it, depending on the year and market it came from. The early D15 JDM cam is the one that you are talking about, and the later (94 and up) engines came with the same cam as the Z6.

[SlowOhFoh]

yeah, and its hard to tell them apart since they have the same head casting as well right?

[TopDeadCenter]

Correct. Also, all D15B engines from the Philippines used the same cam as the Z6, and these engines are sold and labeled in the US as JDM engines by some importers.

[SlowOhFoh]

PDM just sounds funny!