Fast Intentions Stage 2 TT build by MA-Motorsports.

JARblue

Cooltoy is a photoshop wiz if you need help with the graph

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Spooler

We'll see what can be done on the dyno. It should be this week sometime. The 5130 rpm TQ spike at 25psi of boost is what I want to decrease. It needs to be a slower ramp even at 17psi. When the boost is turned up even more
it will get out of control quick. A spin fest isn't any fun.

Spooler

Bringing in this back for comparison. This was on Ignite Red with Ethanol content of 85%.

Spooler

Dang graphs look better than what I remembered. LOL

Spooler

The changes.

New HKS sparkplugs
New SOHO cast intake manifold
New SOHO catch can setup
New Z1 coil packs
New 4 port MAC valve

Not many. We'll see what Nick can do.

Spooler

The biggest upgrade for me is Boost by gear. I couldn't use 25psi of boost except in the high gears before. Being on a boost controller sucked. ECUTEK boost by gear this time.

Spooler

Oh yeah, I messed up. I had MA connect my coolant lines to the throttle bodies on the first engine. I forgot all about it. They have now been removed. IAT's will come down some.

SeeThruHead

i'm curious to see if a the 4 port mac valve will provide you with enough resolution/accuracy or if you'll switch to something with more control

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Spooler

I was on a 3 port before. The 4 port is an upgrade and will decrease duty cycle which will allow me to keep my 12psi wastegate springs.

SeeThruHead

Yeah but you will lose granularity in the amount of adjustment you can make to boost pressure afaik. Curious how that will play out with your boost by gear. Subscribed to find out!

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Spooler

Did you read??? It is all about traction. I will gladly give to get.

One of the newest popular forms of racing spreading across the nation right now is “no-prep” type racing. In this type of racing it is more about traction management than it is about making monster amounts of power. These racers are often starting out with as little as 8 psi on the starting line, and wanting to finish the race with 40+ pounds, where the power can finally be put down at the end of the race track. A 3 port boost controller will not allow you to run a small wastegate spring and still obtain that level of boost pressure. This is where a 4 port comes into play. Yes the resolution of a 4 port isn’t as good as a 3 port, but having less resulotion isn't as much of a big deal when you have such a large spread from min boost level to max. For many racers the loss of resolution is easily worth the gain in min-max ability of boost . For street driven cars, especially FWD cars, this is a HUGE advantage. These big power street cars, or traction limited FWD cars, can go from being absolutely worthless burn-out machines to somewhat manageable.

SeeThruHead

of course i read it. I bet it's probably going to work really well. I would be interested in the psi change you get per duty cycle % if you're willing to share that information when you have it.

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My Build thread STH Build Plan Thread
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Spooler

If you want to know the rule of thumb behind the wastegate spring it is this.

3 port MAC valve:
12psi boost on wastegate spring = Max boost around 24psi. You double it.
I was at 70% duty cycle on the MAC valve at 25psi before.

4 port MAC valve:
12psi boost on wastegate spring = LOL, I have no idea. Guess we will find out.

Spooler

The wastegate springs may limit me. The engine may have to come out to change those. LOL WTH

Spooler

Well, as most good tuners are, Nick is backed up. My car is not a normal car so I need to grab my can of patience. I am sure he wants to tune it in piece and quite.

This boost junkie needs his fix.