Questions for my W4M tune

[Lifted97s-10]

As you can read in my sig i have big plans for my truck this winter break. The main things i am doing are 270 AHR cam swap with the necessary internals, ford 8.8 axle swap w/ 4.10 gears, corvette servo and transgo shift kit. The questions i had containing the Wait4Me performance tune are as follows...
1.) I am doing the cam swap and the axle swap at 2 diff times, the cam swap being first. When i get my comp tuned i will still have the stock rear end for prob a month after that. First off does he need to know the gear ratio? If so should i just get it retuned than or can i just say it's 4.10 and it'll be okay for a short period of time.

2.) Secondly is it worth it to bump up the octane to 93 and will that mess with the cam swap possibly timing wise at all.

3.) I plan on getting the tq management removed, speed limiter removed, the performance/economy tune. Am i missing anything that i should have done...i will give him my tire size and the specs of the 270 cam. Also should i have my shift points raised at all? I am pretty sure my cams powerband is 1,800-5,000 rpms

[tiresmokinV8]

Get it tuned for the new axle ratio and current tire size. Ur speedo is off right now so who cares if its off again until you swap rear ends.

[Lifted97s-10]

Okay. I just didn't know if it being tuned for the diff rear end would screw anything up. Haha and yea it's a great way to keep your miles low. Just throw on some big tires and don't get the gauges tuned for it.

[Lifted97s-10]

Lol anyone else??

[Crew Cab Sonoma]

if you go ahead and have your PCM set up for the new axle,
your part throttle upshifts might be a little early.
your ABS might freak out and go inoperative until the new
axle is installed. it uses the VSS as its rear wheel speed input.

since you are installing a shift kit and servo, DO NOT have
Jesse raise your tranny shift firmness. it will likely be
too harsh if you do.
make sure he knows about the shift kit and servo.

but i would have the WOT shift points raised a few hundred
rpm for the engine upgrades.

[tiresmokinV8]

Well right now he has it tuned for 3.42 gears and stock 27.1" tall tires but hes running 30" tall tires making his speedo run 10% slow. if he has it tuned for the 30" tires and 4.10 gears I feel the computer will react the same as now but the speedo will show ~10% fast. If the abs didnt freak out before I dont think itll freak out afterwards even though the vss on the output shaft of the tranny will make the ecm think its going one speed and the abs sensors on both front wheels wil show a different speed.

[Crew Cab Sonoma]

the ABS will likely not react favorably to the axle ratio change.
changing all 4 tires to a different diameter doesnt really affect
the ABS. but the gear change will alter the percieved speed
difference between the front and rear input signals, until the
PCM is re-calibrated correctly.

[tiresmokinV8]

The rear ABS signal is in the transmission and not in the rear tires. His rear tires are already being read 10% too slow and the abs is not freaking out right now. So with the new gear ratio the tires will be reading 10% too fast and there really wouln't be any difference. If the ABS does freak out we can just pull a fuse and disable it. Either way it wont be a big deal

[Lifted97s-10]

We just installed my servo today. Went well and the only trouble we had was getting the very last ring spacer locked into the groove. But other than that it went good and tomorrow we are doing the transgo shift kit

[Crew Cab Sonoma]

Quote: Originally Posted by tiresmokinV8

The rear ABS signal is in the transmission and not in the rear tires. His rear tires are already being read 10% too slow and the abs is not freaking out right now. So with the new gear ratio the tires will be reading 10% too fast and there really wouln't be any difference. If the ABS does freak out we can just pull a fuse and disable it. Either way it wont be a big deal

right. and thats the problem.
only the rear tire speed input will be altered by the
gear change, the front wont. until the PCM is corrected,
the ABS system will percieve a speed difference betwen the
frontand rear sensor counts, and likely at least set an ABS
warning light. dont know if it would cause the ABS to go
inoperative, but i suspect theres a good chance it would.

if these trucks were like some F-bodys, that had the rear wheel
ABS sensor in the axle housing, reading from a wheel on the
carrier, then gear changes wouldnt matter...

[Crew Cab Sonoma]

Quote: Originally Posted by Lifted97s-10

We just installed my servo today. Went well and the only trouble we had was getting the very last ring spacer locked into the groove. But other than that it went good and tomorrow we are doing the transgo shift kit

did you drive it with just the servo, or are you proceeding with the
shift kit first?

[tiresmokinV8]

He drove it with the servo only yesterday and we finished the shift kit install today. Shifts really nice and since 97 and older didnt have tq management it hits hard enough to chirp second yet below half throttle it feels just slightly firmer then stock then just gets firmer and quicker shifting from 1/2 to wot.

I put up the build post in his other thread

http://www.s10forum.com/forum/f13/do...-three-419522/

[gchemist]

You pay only once for a tune. You can return it after other changes for additional tuning at no charge. All you pay is shipping.

[Lifted97s-10]

Awesome. Well ill get it tuned for the stock gears and than have it re-tuned for the 4.10 gears right before i do my axle swap. And yea we completed the transgo shift kit today and i love it. Couldn't be happier and ya with no torque management since it's a 97 it'll hit the shifts pretty hard.

[Crew Cab Sonoma]

glad you like it. unless you think it needs even firmer shifts though,
i would tell Jesse not to increase line pressure settings.

if you want to just slightly firm it up more, switching to Type F
trans fluid worked for me.

you did install a drain plug kit, right?

[Lifted97s-10]

Quote: Originally Posted by Crew Cab Sonoma

glad you like it. unless you think it needs even firmer shifts though,
i would tell Jesse not to increase line pressure settings.

if you want to just slightly firm it up more, switching to Type F
trans fluid worked for me.

you did install a drain plug kit, right?

Uhm my shift kit did not come with a drain plug kit but i am not really gonna need one. I didn't want to have to take my truck to a shop at all. And as far as tranny fluid goes i hear it is very important to stay consistent with the type of tranny fluid use. I searched and read and found out to use Dextron III. But when tiresmokinV8 and i went to autozone they didn't have dextron III. We ended up using coastal multi-purpose dex-fluid. It was the same brand and on the back of the bottle it said recomended for vehicles using Dextron III. Maybe they no longer sell just dextron III or maybe our autozone just doesn't carry it.

[Lifted97s-10]

Also the shifts are definitely hard enough for me. Without tq management the shifts will only get stronger when i do the cam swap and change out axles so i am happy with the way it is now

[Crew Cab Sonoma]

yeah, the drain plug kit is a separate item, and doesnt typically
come with most shift kits. but if i'm pulling the pan on my vehicles,
i usually install one. makes fluid changes a breeze, and dropping
the pan next time far less messy.

late model Chryslers are supposedly picky about fluid type,
but most GM trannys dont have issues with switching or blending
with Type F, at least thats been my experience.
just about every GM auto ive owned in the last 25 years has beed
switched to Type F without issues. including both Sonomas
i've owned.

[03S-dime_xtreme]

be careful with the stock rear with the 4:10 gear. i did mine and have cracked 2 drive shafts. after i got my W4M tune, 89 oct with tranny line pressure boosted. 80% torq management removed, 266 AH cam on 295 50 16s. i was told its from flooring it all the time and doing burn outs. i was thinkin it was from the little 75 shot but wasnt. tires are to wide the mechanic said. but u will have a blast once yer mods are done!

[Lifted97s-10]

I am not having a stock rear. I am getting a ford 8.8" w/ 4.10 gears and a new driveshaft. My 97 doesn't have torque management and i am not uping the tranny line pressure since the shift kit is sufficient for me. Lol and i know for sure im gonna love the 270 cam. Also my tires aren't that wide they just happen to be 30" tall.

[Crew Cab Sonoma]

if anything, the 4.10's should take a bit of stress off
the driveshaft, since it makes it a bit easier to turn the pinion.

i'd say the wide tires/burnouts/firm shifts/nitrous has
more to do with it...

Mario, is your truck reg. or ext. cab? steel driveshaft?

[03S-dime_xtreme]

its a ext cab. the first drive shaft was the original stocker. then i broke the ends were the u joints are one the first shaft again. they replaced the second one with OEM . the last one they ordered, i was told this one will handle the abuse. this one is aluminum.

[Lifted97s-10]

Yea my tires are only 9.5" wide and i don't run nitrous and never do burnouts haha.

[tiresmokinV8]

Plus his 9.5" tires are all terrains, not even close to as sticky as a set of wide street tires.

[Lifted97s-10]

I might put some shoe goo all over my tires to get some better grip haha...thanks for the idea s106banger

[Crew Cab Sonoma]

shoe goo??? youre not talking about VHT or similar traction
compound are you?
you can brush that onto your tires to soften the rubber
some.

at the track, i usually find that my street tires hook pretty
good with some heat in them from a good burnout...

[Lifted97s-10]

Quote: Originally Posted by Crew Cab Sonoma

shoe goo??? youre not talking about VHT or similar traction
compound are you?
you can brush that onto your tires to soften the rubber
some.

at the track, i usually find that my street tires hook pretty
good with some heat in them from a good burnout...

HAHA NOO. It was kinda an inside joke. Our friend s106banger goes to the track n shows with us sometimes. He is missing a passenger side mirror cuz it broke off. He tried to put it back on using shoe goo. Its like this sticky silicon stuff that skaters put on there shoes. Needless to say it didn't work but we all got a pretty good laugh outta it. Lol i had no idea that they actually had a traction compound you could brush onto your tires tho???

[Crew Cab Sonoma]

yes sir. several companies make it.
many tracks use it to treat the starting line
before big races.
you can often tell when a track has been thoroughly
treated with it, because your tires actually SOUND
like they are literally "sticking" to the track surface...

just do a web search on "traction compound"...

shoe goo on a mirror, huh?

[Fannatick]

lol...I tried using rubber bands to hold a broken mirror one, which worked until you hit a bump and it came crashing off.