Riv tune?

Subject: Riv tune? Mon Sep 14, 2009 10:57 pm

im kind of confused yesterday i started a ve tune on matts car and with the maf unplugged it runs super lean? where as the regals and gtp's run rich why is it that his riv runs soo lean? im talking i saw +35 ltft's??

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99 Regal GSx
~247whp-345wtq~
13.7@100mph w/ 2.100 60' (before everything after ssac)
3.4 pulley / 2.5" catback / SSAC / LQ4 MAF / autolite 104's / FWI / DHP / 3.29's / 2800 stall / input shaft / shift kit / and knock free!!
Coming Soon- 1.9 Rockers/ 3.25/

13.4 @ 104 or better before jan 1st!!!

Subject: Re: Riv tune? Tue Sep 15, 2009 8:03 am

is the IFR table right? What are his mods? What changes have been made to the PCM? Something isn't right. I did not have that super lean condition.

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'98 Buick Riviera; Gen V 3.25 pulley, N*, VS Cam, 180 stat, Custom PCM (Powrtuner), headers & HF cat , 42.5 lb inj.

Grant-built/PRJ/Thrasher trans 3.29 gears, 7/8 chain, zzp hardened IS

Subject: Re: Riv tune? Tue Sep 15, 2009 8:15 am

What scanner are you using? I've heard that some scanners (and some PCMs) switch the +/- and can actually appear lean when they're rich. 35 seems unrealistic, as 16.4 is the max value.

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Subject: Re: Riv tune? Tue Sep 15, 2009 8:21 am

Injector fire rate? i havent looked yet. but i dont believe they have been skewed at all.

omg aaron i totally forgot about that, because he spark table shows up as negative. so i think that might be what it is. it shows positive, but it means really rich. i have a dhp.

_________________
99 Regal GSx
~247whp-345wtq~
13.7@100mph w/ 2.100 60' (before everything after ssac)
3.4 pulley / 2.5" catback / SSAC / LQ4 MAF / autolite 104's / FWI / DHP / 3.29's / 2800 stall / input shaft / shift kit / and knock free!!
Coming Soon- 1.9 Rockers/ 3.25/

13.4 @ 104 or better before jan 1st!!!

Subject: Re: Riv tune? Tue Sep 15, 2009 8:28 am

my mods are:
HAI, LQ4, N*, 3.4" pulley, plog, 3"DP, no cat.

YT 1.9's are waiting to be ordered when i see a good deal on clubgp wink

I had pretty much no KR until the N* went on, and as expected it leans out up top and i'm seeing 3* KR at like 80mph.

thanks for the help guys, i cant wait to get this thing tuned!

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3.4, N*, 1.84RR, P&P blower and LIM, 3"DP, 4"WAI, plog, 6K HID, Eibach pro springs, KYB GR-2, Fbody 12" brakes,caddy STB & sway bar. Rear addco sway bar is next twisted

Subject: Re: Riv tune? Tue Sep 15, 2009 10:12 am

Quote:

omg aaron i totally forgot about that, because he spark table shows up as negative. so i think that might be what it is. it shows positive, but it means really rich. i have a dhp.

Well, it's a possibility. You can't be absolutely sure until you reconnect the MAF sensor and make a definite change to the MAFF table causing a rich condition (increase a few values 1% to add fuel). Watch the fuel trims and see which way they go. If they move positive (up), then "+" means rich. If they go negative (down), then "-" means rich. That's how I'd figure it out, anyway.

Btw, +/- 35 LTFT seems nuts. -23 is supposed to be the max for rich, +16.4 is max for lean, if I remember correct.

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Subject: Re: Riv tune? Tue Sep 15, 2009 11:15 am

i know, but when i was looking at it i was blown away. when i was first tuning my ve would jump to -30 ltfts... now its stays around
-3.1 smile

_________________
99 Regal GSx
~247whp-345wtq~
13.7@100mph w/ 2.100 60' (before everything after ssac)
3.4 pulley / 2.5" catback / SSAC / LQ4 MAF / autolite 104's / FWI / DHP / 3.29's / 2800 stall / input shaft / shift kit / and knock free!!
Coming Soon- 1.9 Rockers/ 3.25/

13.4 @ 104 or better before jan 1st!!!

Subject: Re: Riv tune? Tue Sep 15, 2009 12:21 pm

L8-2BNGO wrote:

i know, but when i was looking at it i was blown away. when i was first tuning my ve would jump to -30 ltfts... now its stays around
-3.1 smile

is -30 even possible? i thought LTFT's maxxed out at 16.41 for +/-

_________________
1.9RR's, SSAC, LQ4 maf and N*, Gen V-ported, L32 LIM ported and polished, L26 block, L67 heads, tune, E85, 65# injectors
Worthy quotes:

Rickw wrote:

What a dipshit, grow up.

deekster_caddy wrote:

LOL @ guessing Rick's age. Since we've gotten together a couple of times I won't guess wink

he'd probably hit me

Subject: Re: Riv tune? Tue Sep 15, 2009 12:25 pm

Ltft limits are +23 and -16.4, I think.

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Subject: Re: Riv tune? Tue Sep 15, 2009 12:29 pm

AA wrote:

Ltft limits are +23 and -16.4, I think.

hmm.. i'll look into this a bit more.

_________________
1.9RR's, SSAC, LQ4 maf and N*, Gen V-ported, L32 LIM ported and polished, L26 block, L67 heads, tune, E85, 65# injectors
Worthy quotes:

Rickw wrote:

What a dipshit, grow up.

deekster_caddy wrote:

LOL @ guessing Rick's age. Since we've gotten together a couple of times I won't guess wink

he'd probably hit me

Subject: Re: Riv tune? Sun Sep 20, 2009 10:10 pm

did anyone find out what the deal was with the fuel trims? im still tuning matts car but im confused. are the reading backwards on a 96 riv with dhp? is -13 kean and +13 rich or vs?

_________________
99 Regal GSx
~247whp-345wtq~
13.7@100mph w/ 2.100 60' (before everything after ssac)
3.4 pulley / 2.5" catback / SSAC / LQ4 MAF / autolite 104's / FWI / DHP / 3.29's / 2800 stall / input shaft / shift kit / and knock free!!
Coming Soon- 1.9 Rockers/ 3.25/

13.4 @ 104 or better before jan 1st!!!

Subject: Re: Riv tune? Sun Sep 20, 2009 10:17 pm

and i need a new mod to kill my boost and KR. i'm thinking 1.84 RR's or a P&P blower.

i think the 1.84's will help my car out more since the N* really added to my boost and i am seeing 4* knock at 80+

_________________
3.4, N*, 1.84RR, P&P blower and LIM, 3"DP, 4"WAI, plog, 6K HID, Eibach pro springs, KYB GR-2, Fbody 12" brakes,caddy STB & sway bar. Rear addco sway bar is next twisted

Subject: Re: Riv tune? Sun Sep 20, 2009 10:30 pm

Mr.Riviera wrote:

and i need a new mod to kill my boost and KR. i'm thinking 1.84 RR's or a P&P blower.

i think the 1.84's will help my car out more since the N* really added to my boost and i am seeing 4* knock at 80+

I have some 1.9RR yella terra's i love them!

_________________
1.9RR's, SSAC, LQ4 maf and N*, Gen V-ported, L32 LIM ported and polished, L26 block, L67 heads, tune, E85, 65# injectors
Worthy quotes:

Rickw wrote:

What a dipshit, grow up.

deekster_caddy wrote:

LOL @ guessing Rick's age. Since we've gotten together a couple of times I won't guess wink

he'd probably hit me

Subject: Re: Riv tune? Mon Sep 21, 2009 7:48 am

I couldn't run the 3.4 KR free until I put my 1.9RRs on. No surprise there. Headers will help too.

_________________
'98 Buick Riviera; Gen V 3.25 pulley, N*, VS Cam, 180 stat, Custom PCM (Powrtuner), headers & HF cat , 42.5 lb inj.

Grant-built/PRJ/Thrasher trans 3.29 gears, 7/8 chain, zzp hardened IS

Subject: Re: Riv tune? Mon Sep 21, 2009 9:11 am

deekster_caddy wrote:

I couldn't run the 3.4 KR free until I put my 1.9RRs on. No surprise there. Headers will help too.

I have noticed this as well, but im pretty knock free. know that i finished tuning i found that any knock i get is a direct result of what my o2's look like. if they dip below 940 ill see some knock.

_________________
99 Regal GSx
~247whp-345wtq~
13.7@100mph w/ 2.100 60' (before everything after ssac)
3.4 pulley / 2.5" catback / SSAC / LQ4 MAF / autolite 104's / FWI / DHP / 3.29's / 2800 stall / input shaft / shift kit / and knock free!!
Coming Soon- 1.9 Rockers/ 3.25/

13.4 @ 104 or better before jan 1st!!!