Magnuson 1900 Project- over-drive Cog, Porting, & Cutting out restrictions....

[G8-4-Speed]

Yeah Doug's car sounds absolutely amazing, missed getting a ride this weekend, but I'm sure they are many more opportunities ahead. The work you did is astonishing to say the least. I can't wait to get some work done.

THANKS!

Would you say a re-tune would be nesscessary if one was to just port the lower manifold only and not change pulleys etc?

Thinking of getting it done
But if it should get re tuned it will have to wait a bit till I get a cam and more boost sorted

When Dan did his, the tune was fine. On a running scan, it did have about a 6% negative fuel trim in the driving area but had good fuel thru the boost range without being rich or lean. So if your tune was good before, it should be fine after porting. Even though it drops a pound of boost, it picks up a little airflow looking at the MAF so your fueling shouldn't change.

[G8-4-Speed]

Nice work. I beat a new turbo camaro 5th gen myself to 140. And I have a hard time with traction too

It is always nice to take a 5thGen guy who thinks he is on top of the world and drop him down a few notches! Sweet Kill! Glad to hear the tune is holding good fuel now! Maybe someday we can try a modified intake on it once you get a little bigger injector on it.

[thebeast]

Yes. Larger injectors and a zl1 fuel pump. I will be installing my fuel pressure gauge tomorrow so I can see what's going on at the track on Sunday.

[evl.346]

When Dan did his, the tune was fine. On a running scan, it did have about a 6% negative fuel trim in the driving area but had good fuel thru the boost range without being rich or lean. So if your tune was good before, it should be fine after porting. Even though it drops a pound of boost, it picks up a little airflow looking at the MAF so your fueling shouldn't change.

mines tuned maffless with a otr aswell,
might give it a go and worst case ill just get the tune touched up which my tuner will do for next to nothing anyway.

so it didnt affect the drivablility/idles any way with the tune untouched on dan's?

[G8-4-Speed]

mines tuned maffless with a otr aswell,
might give it a go and worst case ill just get the tune touched up which my tuner will do for next to nothing anyway.

so it didnt affect the drivablility/idles any way with the tune untouched on dan's?

It is a MAF tune and did not touch it. It went WOT fine as well as idled and drove good. A SD tune should be ok. You may drop from 11.5 AFR to maybe 11.7-8. Not enough to cause a problem. If it is a 1-bar tune, it will be fine. A 2-bar may drop .2-3 in the AFR but not enough to cause it to go lean.

[G8-4-Speed]

Dougs gets a CTS-V pump and a Vapor Works controller this Friday!!! Fuel pump after 90,000+ miles, with a BAP and boost for 40k of it have finally taken its toll....Not dead but getting weak....

[thebeast]

Damn. Now I need to pay close attention to mine.
New job coming will fix all my problems. I'll have meth and a fuel pump soon along with coilovers.

Good luck rick. Doug's car will scream after this

[Zodiac]

Dougs gets a CTS-V pump and a Vapor Works controller this Friday!!! Fuel pump after 90,000+ miles, with a BAP and boost for 40k of it have finally taken its toll....Not dead but getting weak....

Wow surprised it's lasted that long, bet Doug is getting anxious.

[TooManyHobbies]

Dougs gets a CTS-V pump and a Vapor Works controller this Friday!!! Fuel pump after 90,000+ miles, with a BAP and boost for 40k of it have finally taken its toll....Not dead but getting weak....

I love mine. The best part is that you don't even know it is there.

[Doug Hilliard]

Dougs gets a CTS-V pump and a Vapor Works controller this Friday!!! Fuel pump after 90,000+ miles, with a BAP and boost for 40k of it have finally taken its toll....Not dead but getting weak....

Very excited about getting this done! Thanks to Rick for getting me in so quickly, Greg @ Pace for getting the pump out Monday and blazing the trail along with Blue-Mayhem, and Carl @ Vaporworx for good support on the controller and making up a new wiring harness for me the same day I contacted him so the pressure sensor can be mounted at the fuel rail and getting it shipped the next morning!