Ma-Motorsports Boosted performance turbo build

danegrey

Education please, what is an IAT?

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Lots of Changes
the Z needs to be driven and driven hard for the car lives for it

BGTV8

Inlet Air Temperature - higher the IAT, the less dense the air entering the engine and if not compensated for by reducing fueling, the engine runs rich which reduces power.

Even if the ECU fuel/IAT map reduces fuel (to reduce emissions from unburnt fuel), it will kill power generated.

So, high IAT is "not good" for max power.

Lower IAT will give you more grunt - thats why early in a cool spring morning, your car "runs better".

FI compresses the inlet charge and that heats it up, so therefore you need to run an intercooler to reduce IAT, but in high ambient temps about the best you can hope for is reducing IAT's to a few degrees above ambient.

Hope that explains it

GrayGhost

Iat’s?


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Elmo370z

10 degrees over amibent. The ducting works. Compared to 40 without

Elmo370z

Waiting on a new fuel line, oil cooler bracket, SS brake lines. Once all that is installed, flushing the radiator for distilled water, water wetter, and 5-10% coolant

Elmo370z

On my 14th lap. Set a pb. On this short track, it’s very tough to lay down the power. Having either awd or a well sorted Na car is very tough to keep up with. To give a comparison in turn one ssfirehawk is floor around turn 1 vs me just tipping the throttle

Attached Images

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Spooler

Your turbo is too small. This is the exact same problem Hotrodz had with his Fast Intentions stage 1 turbo kit. I have driven the older stage 2 turbo kit and those turbo's are already on boost at 3k. My larger turbo's I can modulate the boost with my right foot in a turn. They are more controllable. Go up a gear and see if you can make it work that way. You don't need to be screaming at 6-7000 rpm's. You have a much wider powerband, use it.

Spooler

You can try to go to a larger exhaust housing and see if that will give you more control.

Spooler

Try to get your turbo's to spool up/Tip in to be around 4000-5000rpm. You can use your gear selection to make sure you are right below tip in in the corner. Doing it this way will allow you to control the boost with your right foot in the turn.

Elmo370z

That’s not it, it was strictly driver error

Elmo370z

Some footage of the track day.

Elmo370z

Back out to Sebring in a week, hopefully it goes just as well as the firm

Elmo370z

Sebring went well, I can confidently say I figure out overheating with a boosted VQ at moderate power levels. I know what needs to be done to keep up with cooling as power increases even on hot days.

Elmo370z

Jesus what a dead thread. 2026 is the year for changes. Going to upgrade to custom 3 ways coils, C&R custom 24x12x3.5 tube n fin with 66
Mm tube with turb and there tall 8.1 mm fin design for better air flow through the Ami ent side. Will have to retune for pressure drop. Also upgrading the oil to an improved racing 30 row.

Elmo370z

Welp had to pay a $200 fee for the engineers
To draw me a design for the intercooler.