207

iTrader: (1)

I'm almost finished with my single turbo upgrade, but I'm concerned about hurting the motor. In summary my setup includes:
550 primaries
1600 secondaries
Precision PT76
FMIC
Street Port by Petit Racing
Power FC
No cats
MSD

I have started the car with the Petit ECU but havenit driven it yet. I will have to use the Power FC but I wanted to make sure it wikk idle with no problems. Here are my concerns:

1. I can only get 89 octane pump gas on the island, What AFR should I aim for street driving. I'm think 10;, for over 8psi. What shouldbe my max boost. My present wastegate has a 10lbs spring.

2. With C16, wha do you think the max bost I can run? The turbo made 780hp at 22psi on a fully built mustang last month.

3. All IC pipingis 3-inch, howeveer, the intercooler inlets are 2.5-inch. Do you think this will hurt performance?

4. Does anyone know where I can get a good map to start with on the PFC?

5. What is the knock threshold I should use on the PFC, and how much timing should I retard? I have heard 60 knock and retatd 20deg. I never got 60 knock on my FC3S but we still hurt the motor last month.

6. What do you think is a realistic hp goal?

7. OUr race track is a 1/8th track, can I run 7.0 with this setup?

I will post pictures soon. Any help would be nice before I actually drive the car.

207

iTrader: (1)

All..sorry about the spelling and typo mistakes. It is late and my fingers are too big for this notebook.

207

iTrader: (1)

Come on people..nobody wants to help..I have been following the forum for years and now nothing..did I do something wrong? I did not get a chance to get a photo yet of the new turbo, but here are two pictues of my car in a show last year with an Innovative 80mm turbo.

13B-RX3

iTrader: (2)

You would probably get a better response here.

https://www.rx7club.com/power-fc-forum-47/

The Griffin

You should also consider some form of auxiliary (water/alcohol) injection with that large turbo and low octane fuel.

207

iTrader: (1)

I would be intersted in water injection. Which system is everyones favourite?

207

iTrader: (1)

Thanks, I will repost there.

mono4lamar

iTrader: (32)

If you set in the 1680cc secondaries in the dataloggit and have resistors inline you should be fine. You wont blow the motor if you don't boost it. Get to a tuner and have it sorted out. IMO I wouldn't boost it at all until its tuned. A realistic goal for that turbo would be 600's surely. It's comparable to a gt42...

207

iTrader: (1)

Thanks..but there are no tuners on the island, but I have a dyno. I have tried to invite Crispeed down but no response. When I get on the dyno I plan to do the following:

1. Use the Base Timing that comes with the power fc
2. Set the AFR to 13.5 on vacuum, 12.5 for 0 to 6psi, 11.5 for 6psi to 10psi and 10.5 for 10 psi to 18psi.

Can you give me some tips to make sure it does not blow. I have heard of people that have rich AFR's and still blow on the dyno. Any help would be great...

G's 3rd Gen

iTrader: (11)

Larger primary injectors would help keep duty cycles in check for more HP. 850 primaries or even larger. G

207

iTrader: (1)

I was going to but a couple of people said to leave the 550 primaries because I did not intend to achieve more than 500hp.