No power!?!

**mr_gtp** · 10-18-2010

So i have a cam swap (.505/.515 custom cam?), a 3.4 pulley, 3 inch DP into 3 inch exhaust, cold air, ported charger and ported lower intake, with a stock DHP file and my best quarter mile run was a 14.8.....wtf????? I didnt have any extra weight in the car just me and no spare. It seems really poochie too compared to my 98 GTP. I do have a 98 PCM in the car IDK if that would matter??? oh and I was getting a little knock when i ran but nothing too crazy (like 2 degrees). Any ideas to

is going on?????

**BillBoost37** · 10-18-2010

4. You should get the crap beat out of you for making me continue this list in multiple locations.

Get your azz back to your original thread, pull the f'n timing cover and find out if you screwed up.

Notice how I got #3 and #4 into this post? Multiple posts anger the 3800 guru's.

**matt5112** · 10-18-2010

Its called your tune.

You need one.

**blueguy** · 10-18-2010

Well...not just that...it probably is a multitude of things...I bet it was installed wrong too...plus that cam is tiny...its smaller than a XP or S1X...and is BARELY bigger than a VS.

**CTKGP09** · 10-18-2010

a PLOG couldnt hurt either

**mr_gtp** · 10-19-2010

i dont mean to anger anyone, i just had that issue resolved so i felt another subject would constitute another topic?? My mechanic was fairly confient that if it was off it would throw a cam sensor code bc they do have cam sensors.. Is that not correct??? Plus i found that i had a bad knock sensor due to service engine light coming on, my O2 readings are around 870 so it is running pretty rich so a tune is def in order, just so i am aware what should i be running with this set up if i wasnt getting problems??? I guess that would help me realize how much of an issue i have

**rynoman03** · 10-19-2010

Get tuned man or find someone that can do it.

**BillBoost37** · 10-19-2010

Depending on where that 870 reading was taken. Should be WOT, then 870 would be considered...about to pop a piston lean. 870 isn't rich at all. And yet.. I may be lying to you, because a narrow band reading is darn near the most inaccurate reading our cars can give us. A wideband is the only real way to know what your fueling is doing.

**blueguy** · 10-19-2010

You want the o2's to look like a roller coaster...ranging from in the 100's to the 900's...Your car probably has like Elevndybillion degrees of knock.

**CTKGP09** · 10-19-2010

could and aeroforce even pick up that much knock?

**blueguy** · 10-19-2010

If it could...it would probably IMPLODE.

**matt5112** · 10-19-2010

if you have half as much KR as you have timing advance.... you'd be at zero timing advance.

Get any more than that.... negative timing?

**footballplaya3k** · 10-19-2010

You're cammed and don't have headers?

**cerick08GP** · 10-19-2010

Originally Posted by bluegtp91

..like Elevndybillion degrees of knock.

no wait...

**Bio248** · 10-20-2010

Originally Posted by footballplaya3k

You're cammed and don't have headers?

whats wrong with that? he is doing a mod that is way more effective than headers first.

**blueguy** · 10-20-2010

Originally Posted by footballplaya3k

You're cammed and don't have headers?

You ever seen a NIC cam car? Manifolds only...they are torquey SOB's.

Research.

**footballplaya3k** · 10-20-2010

And what about top end?

**Bio248** · 10-20-2010

what about it?

**footballplaya3k** · 10-20-2010

How do you have a top end without headers?

**blueguy** · 10-21-2010

Easy...you've got a cam. Headers don't give you THAT much top end. I think your misinformed. Headers MOVE the powerband up top, where at manifolds keep the torque and powerband down low and in the midrange...plus, as long as your front manifold is ported (or have a PLOG)...and a 3" DP, your fine. The crossover and rear manifold are hardly restrictive, especially since the rear manifold is tubular from the factory.