Heres my deal guys and gals. I know the solution but would like some more imput. Since I've recently installed my longtube headers, I've noticed some detonation in the upper RPM. Previously I had bassani shorties and all was fine , L pulled hard and no det. So what gives? Can these longtubes change that much about my tune I guess so but who would have believed it. THe mods are as follows 2800 stall, single blade throttle body, JL chip, k/n filter, LFP longtube headers, JDM cats, Bassani catback, TR-6 plugs, and JDM electric fan w/170 thermostat. I believe Ill Have to get a reburn on my Diablo chip to fix my detonation. Would you agree? By the way Im pushing mid 11's with this set up and what would I expect if it was tuned properly? JEFF

 

If your mixture was lean to start, the long tubes could cause it mixture to lean out a little more. you might want to put the truck on a dyno and set the a/f ratio.

 

You must be running some sort of pulley setup also, upper and lower or both to get mid 11s.If not then WOW!!!


VINNIE

 

it could be that new converter. those things help more than you guys may think.

 

No way its the converter he must have some pulleys or NOS or he is full of BS. The tunners could not even run that without pulleys or NOS

 

And no air filter kit??? Not flaming but that's hard to believe--maybe I missunderstood your post?

Dan

 

Hey,

Post a timeslip on those Mid 11 passes with your present setup..

Sounds like your truck is screaming fast...

Mid 11's with those Mod's???

How much NOS are you spraying?

 

Oh I forgot to mention it has a 5lb lower pulley and a k/n filter w single blade throttle body, oh it might have had a little port work on motor also, No NOS sorry DL.

 

J15BIG is partially right.

A good converter is worth about 5 tenths!!

 

Hmmmm...

Cool, trick flow heads... You've been busy this winter...

The tuners need to consult you for tips..

5 tenths from a good convertor , OK

 

Yo tongue is gonna attach its self to yo cheek you keep leavin' it in there for so long

Have you raced that truck of yours lately or is it still set aside just for the 'beauty' shows? LOL

Gimme a holler some time.

Dan

 

JBSvt,

When you added Long tube headers, did you notice you lost 1 1/2 lbs of boost??? I hope so. This means you have increased the volumetric efficiency of your motor...(i.e. your cylinder pressures have decreased)....Anyway, whenever you add a mod like this you should always get a reburn...if not a custom tune. These trucks rely so much on electronics and sensors...they work as a system.. Hope this helps

 

believe it or not,

the autologic software is rocking

we put the wideband on my truck, and the a/f is perfect right where it is supposed to be!

 

True the autologic software is kicking aZZ, but my truck doesn't turn what I think it should 12.45@108 in Atlanta...is that good for my mods in that heat??? I was hoping for high 11's -mid 11's in the cool!!! Those times w/o N20 BTW!!!

DL where ya been??? Did you get my E-mail????

Lightninrod: How it going??? Hope to see everyone later this summer at FFW in Bristol!!!




Chikin@Charter.net
---------------------
Black '01
Born on 5-3-01
#3603 of 6381
424HP/528ft.lbs @ Normal Temp. w/o N2O
JL Logocaps w/Keychain
JL 3# Lower Pulley
Sean Hyland 2# Upper Pulley
JDM Cold Air
JDM Boost Bypass
JDM/Accufab Throttle Body
JDM Longtubes w/ Silver-Bullet cat-back
JDM Cobra R pump
JDM Eletric Fan
JDM 2” Drop Shackles
PSP 4-Way Autologic Chip ( Tow, Street,Track, N20 )
PSP FactoryTech Valvebody
PSP Deep Tranny Pan
PSP DriveShaftLoop
PSP Truck-Traks
PSP Nitrous Plate
Nitrous Express 50-150 Kit ( Can’t decide which jets to use )
NGK / TR6’s ( .040gap )
Hoosier DOT’s 28 x 10 x 16

 

Hey everybody, i actually lost 2lbs of boost when i installed my longtubes, but thats ok i can make it up somehow. JL is reburning a chip for me so it should clear up the problem.