Just got back from the dyno

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Jan 2, 2012 | 04:10 PM

#21

gtotoocool1

Launching!

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From: northern indiana

Quote:

Originally Posted by splitfinger09

So what should I tell my tuner? The car is running pretty rough. By rough I mean it back fires at high rpms and the car feels like it shutters real bad. Also when pulling out in first gear the car feels like it lugs really bad then kind of comes alive at about 2500 rpms...

is it throwing any codes?have you checked the plugs and wires,and or checked for leaks around the intake and TB?i would check for any mechanical issues before taking it back to the tuner(bent pushrods?).for the street i would shoot for around 12.8 to 1 AFR..but maybe that combo works a little leaner?i'm not familar with the TFS heads and what they like.i would think the stock fuel pump would be ok,do you know the duty cycle of the injectors?

Jan 3, 2012 | 09:21 PM

#22

splitfinger09

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Launching!

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From: Broken Arrow, OK

Quote:

Originally Posted by gtotoocool1

No codes. I am going to swap the ac delco iridium plugs for some NGK tr55. How can I check for leaks around intake and TB? The injectors are green top 42#.

Jan 3, 2012 | 10:13 PM

#23

Pipelayaz

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From: Home: Flint, MI Stationed: Charleston, SC

I'd look at getting a fuel pump as well.

Jan 4, 2012 | 12:24 AM

#24

karpetcm

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From: Glendale

i agree with above comment change out the pump as well.

Jan 6, 2012 | 03:23 PM

#25

splitfinger09

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Launching!

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From: Broken Arrow, OK

Quote:

Originally Posted by Pipelayaz

I'd look at getting a fuel pump as well.

Quote:

Originally Posted by karpetcm

i agree with above comment change out the pump as well.

Can you point me in the right direction on where and what kind of pump I need. Thanks!

Jan 6, 2012 | 03:28 PM

#26

ls1 1990 VN

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Joined: Aug 2004

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From: Auckland, Nth Is, New Zealand.

Sponser section had a sale on Walbro pumps

Jan 6, 2012 | 04:07 PM

#27

PREDATOR-Z

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From: BFE

similar to LG's G5X1

Jan 6, 2012 | 04:17 PM

#28

thunderstruck507

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From: Northwest AR

My car was tuned on the lean side of normal from that shop too. Never had any issues with it though.

With a 230/224 cam, stock heads, fast intake, longtubes, etc my car only made 350rwhp unlocked on the same dyno.

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Feb 20, 2012 | 05:50 PM

#29

splitfinger09

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Launching!

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From: Broken Arrow, OK

Ok so since I installed the H/C I have put on a few more goodies. I now have 1 7/8" kooks along with their true duals, monster stage 2, tick master, FAST 102, a new fuel pump and I plan on going with a SD tune. I originally put down 426/414. Any guestiamtes as to what I will be putting down now? I will post a dyno graph after its tuned.