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BADDGUY6

Senior Member
Joined
May 26, 2001
Messages
928
How can I get more boost on the line? Or faster spool off the line? Went to the tracks tonight. Can't get more than 5-6# boost on the line.(2.22 60ft w/slicks 13.45@105mph no wheel spin) I'm a slug out of the hole. But about 20ft out it pulls good. slow going from 5#to 10# boost.(20ft) But from 10# to 25# spool is fast. I need to get 10# boost on the line. I know a higher stall TC will do it but no $ right now. Any tips?

Thanks
 
borrow someones boost commander and see if that helps any-

get the chip leaned out off the line so it spools better

check for header or x over leaks

check for turbo to header leaks

get a new 02 sensor

get more timing put into the chip -- what chip are you using by the way??
 
Go with a Max Effort set-up and it'll be the last chip you buy.

John C.
 
Originally posted by Quick6'n'-K.C.
borrow someones boost commander and see if that helps any-

get the chip leaned out off the line so it spools better

check for header or x over leaks

check for turbo to header leaks

get a new 02 sensor

get more timing put into the chip -- what chip are you using by the way??
I'm using a Extender Chip w/Trans+. tried 92-108 oct. settings/timings. Same results.:( How can I lean out the chip with the Trans+? I have WOT fuel control. If I drop FP from 42# will it help off the line spool? And put more fuel in at WOT with the Trans+?

Thanks
 
Go with a Max Effort set-up and it'll be the last chip you buy.



He is right on that one. gives you the ability to adjust your fuel curve, for a leaner low end so it will spool up quicker. I like the adjustment feature. Just one thing you should think about. You mentioned not having any money right now, but dont buy a cheaper ME chip. thats what i did, and now, a few months later, i find that its a fake. save up some money or something and buy the one from steve Y ONLY.

if your car is rich on the top end at all, you can lower the FP a tad bit, that will help on the bottom end. lower it maybe 2 psi, then with your translator, increase the WOT fueling, that way it will be leaner on the low end and still the same on the top.
 
Originally posted by BADDGUY6

I'm using a Extender Chip w/Trans+. tried 92-108 oct. settings/timings. Same results.:( How can I lean out the chip with the Trans+? I have WOT fuel control. If I drop FP from 42# will it help off the line spool? And put more fuel in at WOT with the Trans+?

Thanks

How new is your Extender chip? You can send it back to get it updated to the Latest Revision "E" and that offers several different ways to help spoolup in addition to the ones that are already in your chip.

Have you tried the "launch assist" feature in your chip? That should make a difference. You can also set your base fuel in the T+ to lean and then add another 2-4% fuel @ WOT which should help too.

You can also pull out the base timing so it is around 21* and then add that timing back in @ WOT as well.

Also, when launching, try holding 4-5psi of boost and then when the lights come down nail the gas but keep you foot on the brake for a second longer and then let it go. This has always allowed me to launch with more boost than I can actually "hold". That should get you a 7-8 psi launch and hopefully bring those 60's down to a respectable level. Hope this helps a little.
 
Originally posted by c&cgn


How new is your Extender chip? You can send it back to get it updated to the Latest Revision "E" and that offers several different ways to help spoolup in addition to the ones that are already in your chip.

Have you tried the "launch assist" feature in your chip? That should make a difference. You can also set your base fuel in the T+ to lean and then add another 2-4% fuel @ WOT which should help too.

You can also pull out the base timing so it is around 21* and then add that timing back in @ WOT as well.

Also, when launching, try holding 4-5psi of boost and then when the lights come down nail the gas but keep you foot on the brake for a second longer and then let it go. This has always allowed me to launch with more boost than I can actually "hold". That should get you a 7-8 psi launch and hopefully bring those 60's down to a respectable level. Hope this helps a little.
Hi Clayton,
I like the Extender chip:D Oh "Launch assist" :eek: forgot about that Doh:rolleyes: The MAF is already on the lean setting. How much FP do I have to run? I'm at 42# line off now. Should I go lower? So when are we going to see you guys back here??? Tell Carla I said HI:)
Thanks
 
Do you have a nice free flowing exhaust? That helps. Also, at least upgrade to a Duttweiler neck on your stock IC... that PT51 has got to be choked at that turn, and that's not helping either. Case in point: I was running a stock (ported) IC on my T-Type during break-in. Recently switched to an Action Fab 2.5" neck/17 row and gained over 5 psi boost! The Stealth Turbo is a little bigger than the PT51, but you get my point.

Never had trouble spooling the 51 on my GN, but that was with Blue Tops and a Thrasher.
 
You've got the Trans+ and Extender, it would be counter productive throw all that away and start all over again. I'm frankly surprised that anyone would recomend doing that in light of what you have invested. Oh well, to each his own.

Anyway, there's a couple of things you need to think about.

1. See about getting your Extender upgraded to rev E

2. You're present extender, and all others already have fast spool tricks in them, so there's something else to thing about.

3. Ahhhh, your signature has your own answer (need TC). A little more TC with your mods certainly would help.

4. How are your brakes holding boost? Maybe some rear brake work might be in line (larger S10 cylinder, longer shoes)

Sorry, I said only a couple :rolleyes:
 
Originally posted by BADDGUY6

Hi Clayton,
I like the Extender chip:D Oh "Launch assist" :eek: forgot about that Doh:rolleyes: The MAF is already on the lean setting. How much FP do I have to run? I'm at 42# line off now. Should I go lower? So when are we going to see you guys back here??? Tell Carla I said HI:)
Thanks

I wouldn't change your FP. I don't think you should go any less than 42#.

As TurboDave mentioned, maybe do the brake upgrades if you haven't already, and maybe consider adding an adjustable proportioning valve as it will allow you to send more pressure to the rear brakes and you will be able to hold more boost.

Carla and I should be back in December again if all goes as planned. See ya then. :D
 
Hey Guy... I want to see that car at the tracks tonight!!!!:D Need somemore Buicks out there. I might have a TC for sale.

See you guys soon Clayton and Carla.
 
I had the revision B Extender chip and sent it back to have it upgraded to revision E. I also sent Bob a copy of a TL run showing that I was fat on bottom end (high 800 O2s) and that I needed the chip leaned out on the bottom. I received the revision E and the instructions said to set static FP at 45# which I did. When I went to the track, the car was still pig rich on bottom (high 800s) and slow off the line. I did not get a chance for a run at lower FP, but does anyone know the reason for the instructions saying to set FP at 45#? I only have the Translator, so I hope I can lower base FP to 42# and then add WOT fuel via the Translator. Thanks.
 
Hmmm.....

You do mention in your sig. that you have ATR headers. I've heard that these are worthless untill you start going deep in the 10's. Otherwise, they can really hurt you in spool up.

It sounds like your tunning may be right on . Lets forget about your problem with holding boost at the line for a sec. Slow boost from 5 to 10psi maybe a factor of these headers.

Anybody agree?

I guess the only way to really see is by checking your 02 volts when you launch. If your at .820 and above, then it just may need some leaning out. if they are at .790 and bellow, fuel is not your problem.

Just my .02
 
Maxeffort and BSTC work with my PTE51 and stock D5.

I am sure the V4 helped too. Gutting the cat. was a great improvement.

I still have my upgraded Extender Rev. D to try someday but I am enjoying the car too much right now. :)

My first extender was way too rich down low. I can see the reasoning in upgrading to the Maxeffort chip. ;)
 
Originally posted by TurboDave


Anyway, there's a couple of things you need to think about.

1. See about getting your Extender upgraded to rev E

2. You're present extender, and all others already have fast spool tricks in them, so there's something else to thing about.

3. Ahhhh, your signature has your own answer (need TC). A little more TC with your mods certainly would help.

4. How are your brakes holding boost? Maybe some rear brake work might be in line (larger S10 cylinder, longer shoes)

Sorry, I said only a couple :rolleyes:
Thanks Dave,
I have a Rev D Extender. How much to upgrade to Rev E? And I have no problem holding boost on the line.(got the S10 cylinders & longer shoes.) Just can't build more than 5-6#:( on the line. Will the Rev E help build more boost on the line? I want a 10# launch.:D or faster spool up from 5#.

Thanks:)
 
Just want to make it clear that my Extender was an early generation B unit that was rich.

TurboBob stands behind his stuff and upgraded it to a D in June.

Didn't try that one yet.

Email him and you may find the upgrade is free to an E version.

You should check to see off the line if the boost drops way below the 5 psi. and then has to climb back up again or if it just spools slow to 20 psi. or whatever you run up top.

From 5 psi. to 24psi. my 51 is like lightning.

Not always quite as fast from vacuum to the 5 psi. however. ;)
 
Originally posted by BADDGUY6

Thanks Dave,
I have a Rev D Extender. How much to upgrade to Rev E? And I have no problem holding boost on the line.(got the S10 cylinders & longer shoes.) Just can't build more than 5-6#:( on the line. Will the Rev E help build more boost on the line? I want a 10# launch.:D or faster spool up from 5#.

Thanks:)

I honestly don't know what an upgrade would cost, cant be much.
There is a feature in the new Extender called "spoolup fuel". I haven't tried it since I have no spool up issues (I've got a pretty loose converter), but it may very well help you out.
 
Re: Hmmm.....

Originally posted by Turbojorge
You do mention in your sig. that you have ATR headers. I've heard that these are worthless untill you start going deep in the 10's. Otherwise, they can really hurt you in spool up.

Slow boost from 5 to 10psi maybe a factor of these headers.

Anybody agree?



Just my .02
Nope! Mine spooled too well with ATR headers, 63, .85 housing and a convertor not matched to the turbo. Not the headers! It always points to the tune IMO.
 
Not too sure if it was mentioned, but how about a higher stall converter? I'm new to the turbos and it seems a good high stall converter will help out. Too many ackronyms here to learn so i don't know watcha got :p
-Mike-
 
Originally posted by salvageV6


TurboBob stands behind his stuff and upgraded it to a D in June.

Didn't try that one yet.

Email him and you may find the upgrade is free to an E version.

TurboBob Emailed me:eek: That's what I call "stands behind his stuff GREAT service".:D Thanks,Bob:) Sent you mail.

Guy
 
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