Dyno results and questions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Var · 01-31-2005, 11:39 AM

I got my car dynoed @ racetune in fremont. This was on a Dynapack(sp?)

Mods
Redtop SR
3inch DP
Test Pipe
A'pex GT Spec Cat Back
Profec E-01
Greddy FMIC
A'pec BOV
ACT Street/Strip Clutch
Aasco (sp?) aluminum flywheel
Tomei 2-way LSD

My boost controller always shows a drop in boost. Is this normal for you guys with a T-25? Does the turbo just run out of breath or is something else happening? Some ppl say actuator, but i dunno how to test it.

Anyways so i had the duty cycle set to 50% on the E-01 which makes about 13.5 psi when the turbo first spools up. By about 6-6.5K, right around the power peak it bleeds off to 10psi and makes 215hp. Also the A/f Ratio starts of nice when the turbo first spools 13.5:1, but by the power peak, it richens up to 10:1.

1-How much power do you think can be gained by leaning out to 13.5:1 across the whole powerband and sustaining 14psi across the whole powerband?

2-My ECU has a Mine's plaque on it, but it's running pretty rich. Do you guys think it's a real Mine's ECU?

3-Could the boost drop be making it run rich if the ECU is programmed to work best with 14psi?

01-31-2005, 11:39 AM	#1
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	Dyno results and questions I got my car dynoed @ racetune in fremont. This was on a Dynapack(sp?) Mods Redtop SR 3inch DP Test Pipe A'pex GT Spec Cat Back Profec E-01 Greddy FMIC A'pec BOV ACT Street/Strip Clutch Aasco (sp?) aluminum flywheel Tomei 2-way LSD My boost controller always shows a drop in boost. Is this normal for you guys with a T-25? Does the turbo just run out of breath or is something else happening? Some ppl say actuator, but i dunno how to test it. Anyways so i had the duty cycle set to 50% on the E-01 which makes about 13.5 psi when the turbo first spools up. By about 6-6.5K, right around the power peak it bleeds off to 10psi and makes 215hp. Also the A/f Ratio starts of nice when the turbo first spools 13.5:1, but by the power peak, it richens up to 10:1. 1-How much power do you think can be gained by leaning out to 13.5:1 across the whole powerband and sustaining 14psi across the whole powerband? 2-My ECU has a Mine's plaque on it, but it's running pretty rich. Do you guys think it's a real Mine's ECU? 3-Could the boost drop be making it run rich if the ECU is programmed to work best with 14psi? __________________ Hi