Dyno/Tuning issues...

AndyMan · 07-21-2007, 03:00 PM

I had the 3L motor for bout a month now and i was age to get an Xcal2 and plugged it up and loaded up the tune.... The car runs so much more smoothly now since the ECU no longer is turning on the IMRC because i have no secondaries. But i am still feeling some type of restriction somewhere and i just can't find out where...
here are the graphs...

I know i know.....

not what u were expecting... but we have to stop at 6K rpm do to fear something was going to blow... The car is still running lean.. The car still surges in the low RPM range... and i am thinking its my exhaust set up.. i still have the stock cat on with 2 and a quater from cat and Y pipe. I know one of the exhaust gaskets need to be replaced....

I am open to any suggestions.

GrandMasterKhan · 07-21-2007, 04:37 PM

wow your TQ curve is flat as a table! It looks like your avg is about 190wtq which is actually pretty good. (edit: whoops that flat line is the A/f ratio)

199whp is also very good. I can see they stopped @ 6k. So you definilitly have some untapped potental lurking @ 7k

did you get the A/F readout? Without the a/f chart the dyno chart itself only tells half the story.

AndyMan · 07-21-2007, 05:37 PM

yeah the air fuel ration table is on the right side.... its on the second graph.

GrandMasterKhan · 07-21-2007, 11:22 PM

ah i see so that was the A/f ratio which is flat not the tq. lol silly me.

looks like your running almost 16:1 a/f ratio. Yeah so your still running lean as hell. I'd be easy on driving it. Your running 93 right?

AndyMan · 07-22-2007, 02:32 AM

sadly before i came up to get the injectors in i fulled her up on 87 then we put the injectors in. Its bout time to fill her up again

Rikenbomb · 07-22-2007, 02:53 AM

What are the specs on your motor?

Was the place you got your car dyno'd not able to tune it for you?

AndyMan · 07-22-2007, 10:50 AM

my tune was from Natulius performance with an Xcal... i told them my mods to the 3L and they sent the tune accordingly...
I went to the dyno shop because i wanted to get a graph reading but they only speicalize in imports so they can't really do nothing for me.
The 3L has SVT intakes,
CAI
headers & y pipe with stock cat still / 2.25 catback
svt cams
3L PnP heads
DMD
clutch and lightweight flywheel..
and thats bout it.

cpapashley · 07-22-2007, 09:36 PM

Which size injectors are on the car?

If it is running so lean, maybe there is a sizing problem with the injectors....maybe tune done for 24 and you only have 19lb injectors ???

AndyMan · 07-22-2007, 11:16 PM

i am tune for the 19pounders.. and i have 19 pounders... i guess another way to run richer would be a change is spark plugs and wires... stock wires and autolite double platiums...
recommend a change?

wadespencer99 · 07-22-2007, 11:47 PM

If Tom did the tune, have you asked him?

07-21-2007, 03:00 PM	#1 (permalink)
AndyMan NECO Member Join Date: Dec 2005 Location: Fayetteville, NC Posts: 1,302	Dyno/Tuning issues... I had the 3L motor for bout a month now and i was age to get an Xcal2 and plugged it up and loaded up the tune.... The car runs so much more smoothly now since the ECU no longer is turning on the IMRC because i have no secondaries. But i am still feeling some type of restriction somewhere and i just can't find out where... here are the graphs... I know i know..... not what u were expecting... but we have to stop at 6K rpm do to fear something was going to blow... The car is still running lean.. The car still surges in the low RPM range... and i am thinking its my exhaust set up.. i still have the stock cat on with 2 and a quater from cat and Y pipe. I know one of the exhaust gaskets need to be replaced.... I am open to any suggestions. __________________

07-21-2007, 04:37 PM	#2 (permalink)
GrandMasterKhan Buyer Beware Join Date: Aug 2002 Posts: 6,720	Re: Dyno/Tuning issues... wow your TQ curve is flat as a table! It looks like your avg is about 190wtq which is actually pretty good. (edit: whoops that flat line is the A/f ratio) 199whp is also very good. I can see they stopped @ 6k. So you definilitly have some untapped potental lurking @ 7k did you get the A/F readout? Without the a/f chart the dyno chart itself only tells half the story. __________________ Originally Posted by Clutch "repost from turbomustangs thread, jesus can you not check the whole internet before you post something??? What the hell is wrong with you?" Parting out my cougar! "Square pistons rock..." -DemonSVT GMK full systems no longer available. GMK CAI Extensions available by special request only. Last edited by GrandMasterKhan; 07-21-2007 at 11:23 PM.

07-21-2007, 05:37 PM	#3 (permalink)
AndyMan NECO Member Join Date: Dec 2005 Location: Fayetteville, NC Posts: 1,302	Re: Dyno/Tuning issues... yeah the air fuel ration table is on the right side.... its on the second graph. __________________

07-21-2007, 11:22 PM	#4 (permalink)
GrandMasterKhan Buyer Beware Join Date: Aug 2002 Posts: 6,720	Re: Dyno/Tuning issues... ah i see so that was the A/f ratio which is flat not the tq. lol silly me. looks like your running almost 16:1 a/f ratio. Yeah so your still running lean as hell. I'd be easy on driving it. Your running 93 right? __________________ Originally Posted by Clutch "repost from turbomustangs thread, jesus can you not check the whole internet before you post something??? What the hell is wrong with you?" Parting out my cougar! "Square pistons rock..." -DemonSVT GMK full systems no longer available. GMK CAI Extensions available by special request only.

07-22-2007, 02:32 AM	#5 (permalink)
AndyMan NECO Member Join Date: Dec 2005 Location: Fayetteville, NC Posts: 1,302	Re: Dyno/Tuning issues... sadly before i came up to get the injectors in i fulled her up on 87 then we put the injectors in. Its bout time to fill her up again __________________

07-22-2007, 02:53 AM	#6 (permalink)
Rikenbomb Fark Silver Nick! Join Date: Oct 2000 Location: Home of the Ravens, MD Posts: 6,133 Images: 13	Re: Dyno/Tuning issues... What are the specs on your motor? Was the place you got your car dyno'd not able to tune it for you? __________________ Elegance Is Simplicity Euro Inspired Cougar on CougarDB.com

07-22-2007, 10:50 AM	#7 (permalink)
AndyMan NECO Member Join Date: Dec 2005 Location: Fayetteville, NC Posts: 1,302	Re: Dyno/Tuning issues... my tune was from Natulius performance with an Xcal... i told them my mods to the 3L and they sent the tune accordingly... I went to the dyno shop because i wanted to get a graph reading but they only speicalize in imports so they can't really do nothing for me. The 3L has SVT intakes, CAI headers & y pipe with stock cat still / 2.25 catback svt cams 3L PnP heads DMD clutch and lightweight flywheel.. and thats bout it. __________________

07-22-2007, 09:36 PM	#8 (permalink)
cpapashley NECO Member Join Date: Sep 2006 Location: Cleveland Australia Posts: 685	Re: Dyno/Tuning issues... Which size injectors are on the car? If it is running so lean, maybe there is a sizing problem with the injectors....maybe tune done for 24 and you only have 19lb injectors ??? __________________ A Mazda MPV is really only a cougar in family friendly clothing............

07-22-2007, 11:16 PM	#9 (permalink)
AndyMan NECO Member Join Date: Dec 2005 Location: Fayetteville, NC Posts: 1,302	Re: Dyno/Tuning issues... i am tune for the 19pounders.. and i have 19 pounders... i guess another way to run richer would be a change is spark plugs and wires... stock wires and autolite double platiums... recommend a change? __________________

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