Hi
I was installing New FAST 92mm and New LS2 90mm throttlebody.

Didnīt porte either thing ..... for now.
like you can see in my Signature i was running LS6 intake and ls6 TB
And WOW i could feel the diffirence. itīs much more power...

i tried to calculate the horsepower before ,using cars/drivers weight and 1/4 mile time and trap, because here in Iceland there is no dyno bench.
I think it was before changes approx. 460-470 rwhp and 470-480 Tq


I went whith Gtech just to see diffirence between last run i ran before changes and now.

and iīm seing approx. 28 rwhp gaining and peak power going from 5600rpms to 5800rpms, and itīs holding the power preety good to 6250rpms and then it falls fast down (was hoping to see it holding the power longer 6500-6600)

And tQ ganing is around 15 rwTq over the line and it is peaking@4750rpms similuar at is was before

the last time i went whith Gtec , before fast/tb change i saw higher tQ then hp.

but this now was done whith out changen the tune.
so.... could be more in there. but the AFR was around 12.3-12.9
so hopefully iīm seing the 500rwhp number here. after tune....

I did this now because i wanted to see the diffrence on LS6 intake/TB and unported FAST 92/90tb
And diffirence there is

Next step now is taking the Fast off again.
1. Pore the Fast and matching it to the heads
2. Porte/polish the throttlebody
3. take the heads of and iīm gona milled them from 64cc to approx. 60cc-59cc going from compression 11.0:1 to 11.5:1
4. Installe 3" electric cutouts
5. re-tune it

see what this does.....

And when budget allows, iīm gona go to bigger headers 1"7/8

kv baering
Iceland

 

With this all ported and this set up with a good cam with it you should be looking at a min of 75 plus rwhp more. If you have a 5sp or 6 sp get you a good set up in a clutch to help you more. If it is a A4 trans get you about 2800 stall for the car.

 

What tuning software are you using?

 

hi
+75rwhp uffff...... i would like that man
I was hoping for maby 520rwhp
my camīs specs are 248/254, .615"/.622", 114 LSA TX-Giant form TSP

but iīm running 6sp T56 MN6 and 3.42 gears whith Spec stage lll clutch




SOFTWARE:
My friend has HP-tuners that we are using . and we are taking up logs and sending to Jason at TSP, heīs has been helpnig me whith this

Baering
Iceland

 

That is a good size cam didnt know you had more than stock in it at the time with the head work and good set of springs in them with porting tb and intake 520 may be a little on the high side but with a good tune maybe.just make sure the tuner dont lean it out to much. Meth will or can help you get too that with no problem also.

 

You guys need a dyno in the worst way Baezi !!! How about you and 99 friends chip in the funds for a dyno and get her installed. You could make your money back in no time considering you would be a MONOPOLY !! Someone was actually selling one over on CF !!!!

So how long before you pull the intake / tb and do the port work ?

 

I street tuned my C5 to 493 rwhp, on the dyno we found 7 rwhp which would easily have been found road tuning. Final numbers were 500.3 rwhp.

Depending on the roads & conditions you can simulate a lot of dyno conditions.

Would like to see some photo's of your terrain over at your place!

I'm by no means a pro tuner, however I've spent the last year learning how to correctly tune.

You can accurately log your torque so can tell if you improving at various points thru out your power band.

If there is anything I can do to help out with your tuning please feel free to ask.

Are you a Sledder by chance?

 

520 rwhp is the mark for next year....
thatīs including milled them heads down and make compression 11.0:1 to 11.5:1, porte the intake and TB, installing cutouts and later this winter bigger headers 1"7/8 .
And of course Re-tune.

My exhaust-setup is like this: 1"3/4 kooks to 3" No Cats, 3"X-pipe to 2"1/2 pipes stock Z06 TT Catback.

How or what is Meth?


What is a sledder?

What kind of photos of terrain are you meaning.?

thanks for offering help whith tune...


baezi
Iceland

 

Do you Snowmobile?

My question regarding terrain was meaning road conditions. Rolling hills are great for tuning. Where I live in the Mountains we have lots of hills were I simulate a wide variety of dyno load conditions.

I can set my cruise control @ 90 Km's for 20 minutes while cruising up & down hills. Work's very well for tuning the MAF.

Then we have a section of highway with a slight incline & of course no traffic. Then I will do a WOT in third gear from 1500 rpm to red-line to calibrate the upper MAF. Now with my recent installation of 4:10's I can do that in fourth gear as well.

 

sendt you PM....

 

Meth is a spray that is put into the intake just befor the t.b. for when you go into boost on the car it sprays the alky system it also is called. This cool down the temp of the air that is going into the intake about 70 to 80 deg.

 

we are gona re-tune the car after all these changes.

Start from point one.

 

Iīm starting to-night on my newest update/prodject......


Next step now is taking the new 92mm unported Fast and new LS2 90mm TB off again.

1. Porte the 92mm Fast and match it to the heads
2. Porte/polish the LS2 90mm throttlebody
3. take the heads of and iīm gona milled them and increase the compression
4. Installe 3" electric cutouts
5. And then the biggest job : re-tune it from point one.

will keep it posted
Baezi

 

From what I understand, if you already have the car pretty much dialed in then it shouldn't be to hard to update you current tune.

On the milling, how much did TSP say you could shave the heads ? I am just concerned about PTV clearance bro. Best of luck.

 

There are lot of things in the tune that is not good enouch... but i wante to finish up these things before we continue whith the tune.

Jon@TSP was talking about milled them to 60cc, first iīm gona meassure accurate cc number on the heads. but iīm gona measure the PTV too if nessasery before milling.

iīll be careful

thanks for your concern Doug

Baezi

 

So the heads are off......

And here are results for PTV , 6 mm (0.2 inch) where it is thinnest.

pics.





Next step is mesuring the chambers cc. and the decide what much milling there will be, or what iīll go far in increasing the compression.

As for the PTV results , wouldnīt you say there is plenty of room.???

iīll keep posted

Baezi

 

How was the intake manifold for oil collection?

The third photo looks a bit oil wet.

 

the LS6 intake was a bit greasy when i took it of., but itīs not so long since i updated the PCv becuse it was wrong setup then. maby some of this is old dirt .?
the New Fast 92mm fast 100% clean after 1 week of driving.

But this dirt looks more like heīs running to rich like it has been lately.





but now i will change the PCV from LS6 setup to LS2 setup, because of the TB swappe.

Baezi

 

I've not seen many of these motor's apart like this, so I have no idea what is right or wrong here.

Hopefully someone who knows will chime in.

It looks oil wet to me, are you having oil usage problems? Maybe just the antifreeze from head removal is what I'm seeing.

Sounds like your current PVC system is working being the Fast 90 was dry.

 

hi

yea you are propably seeing a antifreze there on pics , i just wiped over the pistons andblock before i tok the photo...


I am taking out the valves now, Man thatīs a hard work if you doīt have a good tools for that.

iīll keep posted

Baezi