Power mods of 99-02 5.3 V8

[blown_away]

having the same problem with preditor programer. wont shift out of first at wide open throttle?

[OzzHead]

Originally Posted by blown_away

having the same problem with preditor programer. wont shift out of first at wide open throttle?

I had the same problem with my hypertech and i found that it was the rev limiter. I was hitting the rev limiter before the auctal shift point therefore it wouldnt shift. Try raising the limiter higher and see, it worked for me

[duplantisjj]

Hi guys. Been away for a while but my ex just said to choose her or my truck.........hmmm....sure like my truck..:)

Just spent that last month or so doing a lot of bolt-on mods, here's the list:

Gibson Extreme dual cat-back (noticeable SOTP gain)
Hypertech HPP3 (love the shift points but nothing drastic in gains)
K&N FIPK 77 Series (noticeable SOTP gain and cool sound)
Granatelli MAF (Is it doing anything?? Idle now is at 500....grrrrrr )
Edelbrock Shorty Ceramic Headers (definite SOTP feel...painful install...re-use the old donut gasket...cheap b@s$trds)
Flex-a-lite Elec Fan (received wrong size fan last week...need the 292 for 28" radiator.....anyone considering this unit should measure yours before ordering a 282......mine should be installed next week)
Hypertech 180 thermo.....I'm sure my engine likes it..

Now.....I am wondering what next.....other than supercharging (we only have 90 octane in Alaska) I'm running my HPP3 at 93 setting with Octane Booster and no knocks or pings.
1.8 rockers? Is this worth the $$?
Custom PCM (I can sell the HPP3 pretty easily)....That Wait4Me PCM is sounding really good for $150
Throttle Body (does anyone know is this does anything?)
Throttle Spacer?
Nitrous?.....Anyone running Nitrous on an NBS?

Anything else......Bolt On....????? I need more power!! I can hang with Lightnings and SSs.....but still beating them depends on the situation.

[dmxracer17]

on my 03 5.3l h/o i currently have=
Gibson single exhuast
K&N gen 2
Hypertech programmer
Hypertech 180 stat
MSD 8.5mm wires
Descreened MAF
i plan on adding=
Gibson Chrome headers
Flexalite fan
Granantelli MAF Sensor
BBK throttle body(?)
Airaid Throttlebody spacer

any other ideas?

[Vortec05]

I did not see a throttle body bypass. I have added one to my 4.8. I was looking for power mods when I came across this mob that was 17.00 and it freed up an average of 8 hp. I also did not see the flowmaster mmuscle truck exhaust. I just got mine and am going to add it this weekend.

[spazzed_ninny]

Stg.1 EFI system for GM vehicles(nitrous express). 100 shot. It is a wet
system(don't get a dry system) that is adjustable from 50-150hp to the rear wheels. very simple to install. its pretty straigth forward. i installed a ZEX direct port injection for my buddies 2005 Honda S2000 and I can honestly say I never want to do it again. I would suggest you not activate the system for any longer than 15sec. at a time. If you have the system activated for too long at any one time you will melt the magnets on the solenoids. If that happens, the entire solenoid has to be replaced. You can run the nitrous as much as you want till your bottles dry(take this with a grain of salt, please!) as long as bottle pressure is maintained and you keep your runs under 15 seconds(i keep it under 10) then you won't have any problems. be sure to pick up the Iceman Pure-Flo nitrous solenoid(has purge built in) and replace the solenoid they give you with this one. it will clear your lines of all fluids(the nitrous will liquify when not under pressure and it will give you better performance). also, since your in alaska, i'd HIGHLY suggest getting a bottle heater to keep bottle pressure at 900-1050psi BEFORE it hits the solenoid. Try to keep yoru tanks(yes i 5lb tanks, one where the stock subwoofer was and the other on the other side, I'm very lazy and don't feel like removing them and refilling them all the time) at least a quarter full. you should pick up a Gen-x kit as well(so you don't "accidentally get high" off of medical grade nitrous oxide...on a side note. there is no difference in medical grade or the other stuff u get at gas refil stations. Just that non medical grade has a different element(can't remember what its called) that gives you SEVERE headaches when 'accidentally' inhaled. all you need is at least premium pump gas, colder plugs and upgraded ignition(i still need to upgrade the ignition). th ignition isn't a must, but would help. as far as activation of the system is concerned, you can go 3 ways. wide open throttle switch, electronic and push button. choose according to your driving style! for instance,I use a push button because my driving style is...well to piss off any many people as i can(i'm always at WOT). i stomp on the gas with the nitrous from stop light to stop light and sometimes flying down the freeway in the middle of the night. you can configure your set up all you want, even have the ability to change the amount of shots for every activation while you drive.

i will be moving up to alaska soon(hopefully), within the next 3 months or so. If you want I can help you install it.

[Pauly]

The compound that gives you teh headache is Sulphur Dioxide, it is dissoved in a 10 milion parts per million concentration. No Whippits for you. lol

[yellowsilver]

Intercooled ProCharger
www.procharger.com
Around $4000. Not bad for 100+ hp

[DUBAIR]

DUB~air Polished Stainless Cold Air Intake System $399.99
www.dub-air.com
Zach

[TSS]

K&N drop in filter and Superchips programmer (play with it a little - don't just accept the "performance" setting - manually adjust shift pressure and shift point settings - it is easy) cost less than 400 bucks and provides a noticible difference in my '01 5.3 Tahoe.

[Loanshark]

Originally Posted by duplantisjj

Hi guys. Been away for a while but my ex just said to choose her or my truck.........hmmm....sure like my truck..:).

I'm sure the two of you will be very happy together.

PS: She has nice headlights.

[wusthof]

Just re-posting to this thread as well for the quickest response. Hey guys..............quick question here. New to the board and I figure this would be the best place for this question to be answered. I'm not new to the scene as I have a hopped up Grand Cherokee. My father has an 03' Burb 5.3 - He tows a trailer and wants a lil xtra power. 1st of all think intake, but he has heard thru people that with the oil type filters like K&N and AirRaid, mess up/contaminate the sensor that is located inside the factory piping ----- hense, replacing it once a year to the tune of $100. Have you guys had any probs with the aftermarket intakes and screwing up sensors and such or is it a load of crap? Thx guys

[hbz71]

you can find a SLP 160 degree T-stat at jegs.com for $19.99 and a TB spacer at summitracing.com for $50

[dropped4dohoe]

We built a 99 5.3 shortbed. swapped in a 6.0 block (stock) pretty nasty cam, 4.8 heads, no port work, no headers, just true dual w/ flow's, 3500 stall, traction bars and ET streets. w/ 150 shot It ran 11.30's. no tune. Just programer.

[ltn]

are aftermarket thermastats even worth it.

[JM's Customs]

i dont see any one running pacesetter long tube headers, does anyone other than me run long tube headers.

[lmk2005]

Which long tubes did you get? And what year truck are you running them on. I have a 99 4.8L and i need to get some headers but im not sure which ones to go with. I hear the Pacesetter Lt's are good, but i cant find them for the life of me. Thanks.

[Raul_Chile]

Hi

Do It modification are idem 6.0L?

Raul

[lukc22]

I clicked on the list of free power mods to the 5.3 ltr but the link is no longer available... Does anyone have a list I can read???


Thank You!!

[JM's Customs]

the throttle body bypass is a free mod which means you dont have to spend any money, all you have to do is unplug from throttle body and plun in to block. taa daa