I was wondering what people are getting at 11 psi, on a GS. I ran a 15.8 at 89mph N/A. I have 18'' wheels with street tires BTW.

Ask away at what you want to know about my setup. I really would like a high 13 sec. but I don't want to get my hopes up.

Tell us what the set up is first.

Originally posted by Scandelous
Tell us what the set up is first.

t3/t4 .57 trim .50 A/R T-25 wastegate @ 11psi
12x24x3.5 FMIC
2.5'' IC piping
1g BOV
360 4g63 injectors
4g63 Fuel pressure regulator 1:1
walbro 255 fuel pump
arp head studs
3'' turbo back exhaust
2.5'' Down pipe
S-AFC to fine tune

You're running a 1:1 regulator? What is your static fuel pressure? You should search the turbo section about problems people have had leaning too much with thier AFCs. Leaning the MAP signal causes our ECUs to advance the timing and people have blown their shit up because of it. You may want to look into getting something like a SFMU to control the fuel pressure curve with a bit less dependance on the AFC. Just a thought.

Theres no mention of upgraded pistons/rods. 11 pounds on that turbo is going to be bad news to your ringlands if you don't tune it right.

If you can manage to "fine-tune" it well enough then you should be able to get into the 14s easily with 11 pounds. High 13s are going to depend alot more on the launch and temperature - I think it may be doable but you might have to crank up the boost a bit to get there. Its a nice big turbo and a nice big FMIC.


95 Eclipse RS : 5 speed
14.76 @ 94.72mph
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

Originally posted by peter2.slow

Originally posted by Scandelous Tell us what the set up is first.

t3/t4 .57 trim .50 A/R T-25 wastegate @ 11psi 12x24x3.5 FMIC 2.5'' IC piping 1g BOV 360 4g63 injectors 4g63 Fuel pressure regulator 1:1 walbro 255 fuel pump arp head studs 3'' turbo back exhaust 2.5'' Down pipe S-AFC to fine tune

Just to clarify, how do you have a 2.5" downpipe but a 3" turboback?

Originally posted by BANME!TuNeR

Originally posted by peter2.slow

Originally posted by Scandelous Tell us what the set up is first.

t3/t4 .57 trim .50 A/R T-25 wastegate @ 11psi 12x24x3.5 FMIC 2.5'' IC piping 1g BOV 360 4g63 injectors 4g63 Fuel pressure regulator 1:1 walbro 255 fuel pump arp head studs 3'' turbo back exhaust 2.5'' Down pipe S-AFC to fine tune

Just to clarify, how do you have a 2.5" downpipe but a 3" turboback?

Yes that is correct.

Originally posted by peter2.slow

Originally posted by BANME!TuNeR

Originally posted by peter2.slow

Originally posted by Scandelous Tell us what the set up is first.

t3/t4 .57 trim .50 A/R T-25 wastegate @ 11psi 12x24x3.5 FMIC 2.5'' IC piping 1g BOV 360 4g63 injectors 4g63 Fuel pressure regulator 1:1 walbro 255 fuel pump arp head studs 3'' turbo back exhaust 2.5'' Down pipe S-AFC to fine tune

Just to clarify, how do you have a 2.5" downpipe but a 3" turboback?

Yes that is correct.

LOL!

turbo back = downpipe, testpipe/cat, and testpipe/cat back

Therefore 2.5 inch downpipe and 3 inch turbo back doesnt add up I think is what he was trying to say.

you have a 2.5 inch downpipe then 3 inch from the downpipe on?

you know thats what he's tryin to say, give him a break

Yes that is what I am trying to say, thank you black magic. My wastegate flange is only 2.5'' so I can't go that much larger or I would. The only restriction exhaust wise is a muffler so to be technical yes 2.5'' DP to a 3'' Downpipe back exhaust

Originally posted by peter2.slowI ran a 15.8 at 89mph N/A.

What all was done to it when you ran that time N/A?