50# Ultimate Installation Datamaster Run

[odium]

I just finished installing the 50# injectors, 3-bar, and Ultimate and it's about 1000% better than when I was using the Pitbull. I am including a link to the datamaster runs for you guys to check out and comment on if you want.

The 50# injectors were easy to install. The intake doesn't need to come off because the fuel rails move enough to unsnap and snap the injectors in and out. The intercooler and AFPR were the only things removed. Just a little info for anybody wondering.

I had forgotten that I needed an aftermarket boost controller with the 50# calibrations so I went to the hardware store and ghetto-rigged a controller for less than $3.00. It is a T fitting with a needle valve to release some pressure and works ok I think. Check out the datamaster file and tell me if this might be why the boost control is crap or if the stock wastegate is just ass. The control wasn't this bad with the Pitbull; it was fairly steady, but the computer was controlling it before. I'm getting boost spikes and whatnot and I'm set for about 16 psi right now. I should have the Ultimate set up for 18, but with the spikes I'm seeing now, I'm not going to turn the boost up yet.

The file has a few runs appended to each other, most of which are T1F6. My mV look good and the KR goes up with the boost, so it isn't false. The last run I did calculates as 14.008 quarter mile with a 2.068 sixty foot. I didn't pump the brakes, so I was creeping at the start of the run. I don't know what real quarter mile times this calculates as, but if the calc is put one Rec# forward, it goes to mid-13s.

Is my IAC way off again? Are my IATs high? Is my boost controller too ghetto or does the stock wastegate just suck ass? I think SeattleSys runs looked similar to mine here with the control issues and so did Xaviers (black Ty on 20s). *shrug*

http://www.wsu.edu/~odiwik/ultimate_boost_cont.uni

 

[odium]

Re: 50# Ultimate Installation Datamaster Run

Is there anybody out there that's checked out the run!?

 

[93ty475]

Re: 50# Ultimate Installation Datamaster Run

i don't know your mods, but it is my understanding that the ultimate works with the stock w/g solenoid to control boost...someone will correct me if i'm wrong....a pre-ultimate datamaster run would be a better one to post imo....closed loop runs would offer more data as far as BLMs and short term counts ....your runs are all in open loop which i believe is a feature of the ultimate in some of it's settings....your IAC and TPS calibrations are definitely out of wack....that (along with a million other possible things) should be addressed before you do any WOT runs and especially before installing the ultimate....your iac counts are very high (under no load) which could be an indication of low airflow past the throttle blades....also your tps% and tps voltage is higher than it needs to be at idle....since you have datamaster, adjusting your iac and tps should be cake....

with the ignition key "off", jumper both upper right aldl terminals then turn the ignition key "on" (don't start it) for several seconds....the iac should be making a buzzing sound when the plunger is fully extended....before turning the key "off", unplug the iac electrical connector by the throttle body.....engine warm, a/c off, and in park, start the truck and adjust the throttle stop screw for ~600 rpm....turn the truck "off" and remove the aldl jumper then reconnect the iac plug....after this adjustment, you need to set the TPS...key "on" again... ~.50 volts closed throttle (yours is at .65 now) and 4.xx volts at wide open throttle....get someone to put the pedal to the metal for you while you set the TPS under the hood....dont adjust it by twisting the throttle linkage under the hood by hand....make sure datamaster registers 100% when its floored...tighten down the TPS then recheck it with datamaster....

if this doesn't fix your problem, open the throttle blades by hand and clean the black gunk with a solvent and a toothbrush....also might help to clean the IAC passages...hell, while your at it, do a complete topend cleaner cleanup of the upper intake.....someone here mentioned that if you create a large vac leak (undo the brake booster vac line), your iac counts should shoot to zero because the ecm is trying to lower the resulting high idle.....never tried that, but it makes sense.....anyway, i'd start by adjusting your iac and tps before anything....might be a good idea to put your truck back to stock to tune your idle.....

you ran way too much boost on that last blast btw....i would mix in at least a few gallons of 110 octane in the tank if you expect to run or spike that high of boost....you need to get with the ultimate vendors and/or creators to see what you need to do in order to remediate your boost control issues.....other than that, nothing really jumped out at me....maybe someone else will see something.....good luck

 

[Maverick87]

Re: 50# Ultimate Installation Datamaster Run

you need to set the TPS...key "on" again... ~.50 volts closed throttle (yours is at .65 now) and 4.xx volts at wide open throttle....



The sy/ty's dont have an adjustable tps. It resets itself every time you turn the key on.

 

[smeagol]

Re: 50# Ultimate Installation Datamaster Run

i don't know your mods, but it is my understanding that the ultimate works with the stock w/g solenoid to control boost...someone will correct me if i'm wrong....a pre-ultimate datamaster run would be a better one to post imo....closed loop runs would offer more data as far as BLMs and short term counts ....your runs are all in open loop which i believe is a feature of the ultimate in some of it's settings....your IAC and TPS calibrations are definitely out of wack....that (along with a million other possible things) should be addressed before you do any WOT runs and especially before installing the ultimate....your iac counts are very high (under no load) which could be an indication of low airflow past the throttle blades....also your tps% and tps voltage is higher than it needs to be at idle....since you have datamaster, adjusting your iac and tps should be cake....

He has the 50lb/hr chip, which runs in open loop fueling mode full time. Also, the boost control on these chips was never really finished, as it seemed *everyone* was running a different combination.

Wicked - what is your buildup?

 

[93ty475]

Re: 50# Ultimate Installation Datamaster Run

you need to set the TPS...key "on" again... ~.50 volts closed throttle (yours is at .65 now) and 4.xx volts at wide open throttle....



The sy/ty's dont have an adjustable tps. It resets itself every time you turn the key on.

i've always adjusted mine...must be a habit from the buicks i've messed with....

 

[93ty475]

Re: 50# Ultimate Installation Datamaster Run

He has the 50lb/hr chip, which runs in open loop fueling mode full time. Also, the boost control on these chips was never really finished, as it seemed *everyone* was running a different combination.

interesting....i have a couple of boost solenoids on the way...from reading your past posts (and playing with tunercat), i realize there isn't a simple adjustable 0-30 psi constant in the tables.....which are the tables that need modifying to manipulate the boost? i have a pte stealth70, 72lb injectors, modded 749 ecm on a built stock 4bolt block....suprisingly, i have it running pretty well now....base boost seems to be right at 12 psi....do you think it would be beneficial to somehow rig up a stock actuator on the pte turbo? i remember you saying that the pte actuator was tighter than the stocker...

 

[odium]

Re: 50# Ultimate Installation Datamaster Run

ATR cold air intake, KN Filter
50# Injectors
50# Ultimate Gauge Style
Ghetto $3 Manual Boost Controller
Blue Annodized AFPR (don't know brand)
Unknown Fuel Pump (PO says it is a Walbro 255)
Battery Relocated
ATR 45,000 BTU Auxilliary Intercooler
Hotwired Upgraded CAC Coolant Pump
Reliability Mods (Rubber intake hoses, Conrad, NGK plugs, etc.)
Lowered just about to the bump stops front and rear

I think that's it.. It doesn't seem too much deviated from stock....

My IAC counts were looking ok before the ultimate installation with a stock chip the other weekend. I will adjust this when I get home tonight.

The boost controller is a T with a bleeding needle valve.

For some reason the Ultimate knock LED is constantly lit, anybody know a remedy to that one? The chip cycles through PROM IDs fine.

The boost has been turned down since the last run. Its set to spike to ~13 psi now and stay around 11 for now until I figure out the boost control situation.

Any other comments or ideas?

 

[odium]

Re: 50# Ultimate Installation Datamaster Run

Sorry, forgot to mention it is stock turbo, wastegate, downpipe, exhaust also.

Here is a run done with the stock chip about 150 miles before the ultimate installation. It looked reasonable, with a max of ~5 degrees spark retard, which used to be considered pretty good in the past on this forum from what I've been told. The wastegate was adjusted a little too tight, but has since been loosened a few turns. You'll see in the run below:

http://www.wsu.edu/~odiwik/stock_chip_before_ult.uni

The throttle body did look pretty gunky, so I am in the process of cleaning it and running top engine cleaner through it.

Do the IAC counts look ok on the stocker run?