Thread: 12 sec budget GTP

Originally Posted by TwinV6GTP

I run on AV gas all the time. Here it's just a little more than 94 octane pump gas... no big deal.
The thing gets 35 MPG now...unbelievable...

That is nuts. My regal only gets 18ish city, and 28 hwy current setup

Originally Posted by TwinV6GTP

I'm tuned for 15.5 A/F highway lean and it likes it, no misfire.
More timing than stock.

iirc mine is like 14.6 hwy, You should build a budget 3800 Fiero like this, guarantee you will pull flat 10's.

Originally Posted by 88formula

iirc mine is like 14.6 hwy, You should build a budget 3800 Fiero like this, guarantee you will pull flat 10's.

Being that you prolly didnt adjust the tune, its always trying to achive stoich, so 14.7 but the numbers are always jumping around.

Originally Posted by Fivefingerdeathpunch

Being that you prolly didnt adjust the tune, its always trying to achive stoich, so 14.7 but the numbers are always jumping around.

Yeah what you said... always bouncing around, only consistent on WOT. I am no tuner, and dont know the first thing about it, but would love to learn.

Originally Posted by TwinV6GTP

Anyone ever did a before and after Dyno with just headers ?
Or before and after Drag E.T. ?

I'm curious about the real world gains...

When I made my 3" cat less exhaust it made a huge difference. Night and day.
My logs showed a lot of power and was all stock pulley. How much more power would a header give me.

The way I see it, most people when installing headers also get a full exhaust so who knows which gives the most power.

Also same idea with a cam, I was hoping to stay stock idle, stock sound... but if I have to go in the cam, I will. I need more MPH 110-112 + with just one engine for my goals.

So before and after cam dyno or track E.T. etc...
In the meantime I'll see what I can find with a search.

You can find all that info on Club Grand Prix! Your online Grand Prix & G8 resource

Originally Posted by 98GrandPrixIraqVet

I can get 110 out of the pump here by the dirt track but when regular is over 4 bucks E85 has to be a more economical which makes me wonder how much daily use does this get tuned back and pullied up???

Midwest/up north has cheap E85, unfortunately here in Georgia E85 costs about the same as 93.. so not very economical for daily driving That and the unavailability has kept me from converting.