Thread: A really dumb question but its been on my mind forever

If I put on the 3.4 setup (pulley, exhaust, plugs, intake, injectors) can I still drive my car before I get it tuned. Or will it all fail because the systems arent responding the way that they should be to the pcm?

blow up and die

Probably ok if u take it real easy but a tune should be had asap

You can drive it.

If your talking about your 05 GTP, you'd want a 3.6.

And upgrading injectors is not needed at that point in time, you wont outflow them.

you can drive it just dont step on it id take off the S/C belt until you get the right supporting mods so your not tempted lol

Originally Posted by Fivefingerdeathpunch

You can drive it.

If your talking about your 05 GTP, you'd want a 3.6.

And upgrading injectors is not needed at that point in time, you wont outflow them.

I am talking about the 05 GTP. What kind of gains am I going to see out of this? My dad has a stock 09 Mustang GT and loves to remind me that he does, so I want my GTP to crush his little pony

You'd see roughly the same gains off of a 3.6" on your Gen V m90 as a 3.4" on a Gen III from a 03 and earlier car is what he means by that.

The Gen V is way more efficient than the Gen III so you see more gains from a bigger pulley.

Originally Posted by matt5112

Why did you change the injectors?

You're no where near the point where you need larger ones.

If you put the stock ones back in you can drive it, but I wouldn't go WOT.

Stock timing table is aggressive and will probably knock quite a bit on a 3.4, 3.6 being the recommended pulley.

However scan and find out.

I havent changed anything yet, I just wanted to know if I did change them for a 3.4 setup if I could drive it before a tune

The car is my DD so I cant afford to have it sit at all

If you do a 3.4 on a gen v you're probably gonna want a cam.

Research kiddo.

Link in my siganture.

Buy headers.

Get a way to scan it.

Make an intake.

Get a 180* T-stat and new plugs/wires.

ZZP MPS/3.6" pulley.

Yeah...might take the 3V mod car...probably not though.

Needs valvetrain upgrades.

A vs would be plenty enough with a good tune then, that mustang won't be a problem.

Originally Posted by blueguy91

Research kiddo.

Link in my siganture.

Buy headers.

Get a way to scan it.

Make an intake.

Get a 180* T-stat and new plugs/wires.

ZZP MPS/3.6" pulley.

Yeah...might take the 3V mod car...probably not though.

Needs valvetrain upgrades.

You sir are a saint

I ran my gtp without a tune on a rockered 3.4 setup for a few months with no KR. I don't know my afr though.

You can still chip a piston without seeing any knock. Knock shouldn't be your only concern, you afr is very important too.

And you can give your dad a good run for his money once you get it tuned.

I can't imagine i was very lean because when i was doing some "testing" of the stock pcm i put it in and did a few WOT runs and my AFR was 11.0

Well a perfectly tuned turboed l26 that was stock other then the turbo kit just blew a piston with zero knock. The l32/l26s don't have a rounded edge around the piston heads and get really hot, the ring expands and gets stuck then piston head pops...or something like that. His afr was spot on too.

I'm not saying that aren't exceptions, there's been plenty of people that have a done a 3.4 setup without a tune and haven't ever had a problem. Or they didn't own the car long enough lol.

I just wanted to point out thats there's always talk about knock but hardly any talk about afr.

Yeah afr is just as important if you want your car to run long at all.