I lurk here regularly but try not to say much since I'm NA and lack FI knowledge. I'm ready to begin an FI build and would like the opinions of you long-time FI'ers to see if I'm heading in the right direction.

Personally I like the power band of SC'd over turbo. The intention of the car will be nice weather + occasional track use. I think the setup I have in mind will be more forgiving in these conditions...

Planned build:

- Centrifugal SC running 12lbs of boost. I'm leaning towards a 1220sl. Is it worth the extra $ to use a 1200?
- FMIC instead of AC. Originality?
- OEM internals/HG. Already upgraded to AP2 retainers and banjo bolts.
- K-Pro (already have a wideband so that should work nicely.)
- 255 lph fuel pump
- Injectors - Not sure on how big to go. Preferably saturated for ease?

I'd like a solid 400whp tune and think I could reliably get it with this setup.

Does this look like a solid platform to make some decent power? Anything to add? Subtract? Suggestions on injector size? Caveats?

I'm not looking for a bench race, just tried and true information from the guys that have blazed the path before me. Thanks for any info/opinions everyone may have.

 

1. get the SOS kit. Id upgrade to the 1200 blwoer if your going to install a hg and run more boost later on.
2. AC definetly. You lose too much boost using a FMIC.
3. Keep it stock block/stock hg if your boosting 14 psi and under.
4. Kpro- gr8 choice.
5. Injectors- Get the Injector dynamic 1000cc injectors. They are amazing. and will allow alot of room for upgrades later.

if you want to optimize your setup, id do a header to straight 70mm exhaust. Maybe bored throttle body. Ported head if you have the $$.

 

Thanks for the information. It leads me to more comments/clarifications/questions:

Current mods are in my sig above. I'm already running a header to 70mm. As you can probably tell I've been planning for this for a long time.

I may eventually get a SoS TB, but probably wouldn't spend the $ to do any head work. I'm leaning towards the 1220sl since I don't think there is an sl option for the 1200 and I shouldn't ever need to run over 18psi of boost. I think I'd have to go to a 3" exhaust and rework a lot to optimize a 1200...

I'm sure there will be 1-2 psi of pressure drop associated with a FMIC like you'd see in a turbo setup, but couldn't I just bump the blower pulley .2" smaller to compensate? Lets say I want 12psi to the motor, I could just run the 14psi pulley, correct?

The ID 1000s - Are they the right choice when going for a 400-450 hp goal? Are they under-utilized at that point or the most effective? I do like the room they give for growth.

Also, what would I need to do about the MAP sensor w/kpro?

 

[QUOTE=drewmob,Nov 11 2009, 05:44 PM] Thanks for the information.

 

Ugh...so jealous. I want to upgrade a Novi 1200 but I need to buy the adapter from Comptech and pay $2000 (or so) just for the snail!

 

on the 1220 sl blower you could just keep a stock hg and boost to 12-14 psi and get 400 easily.

 

the 1220sl blower is maxed out at less than 18 psi. one of the guys on this forum with the sos kit said it was maxed out at 12~ psi.

 

58135 sn hit 400whp 18psi 9:1 on dynojet. i just dont see it happening on 12psi even on stock hg. i thikn u give up some efficiency for the SL option.

1200 FTW.

 

its 518135...haha

The 1220sl maxes out at 18psi with a larger crank pulley that SOS will not sell you unless you have a built motor. Run the 3.0 pulley with 13ish psi and achieve 400whp. You will be very happy with that.

to me the kraftwerk kit holds you back if you ever end up with a built motor. Plus its kinda of a PITA to work on...

In conclusion:
3.0 Pulley on a 1220sl
upgraded heat exhanger
nice header and exhaust

I know someone selling this kit...... PM 518135 about it

 

What are the differences between the following?

1220 @ 12 psi

1200 @ 12 psi

I would assume the 1200 would make more boost sooner and achieve higher peak hp?

Please advise.