Re-Modifying...

[MGM GT]

I found my journey with the G8 kinda funny. I loved it like all people do when they buy a new car and I modded it as soon as I got home from the dealer and proceeded to race it all season. Then I had a falling out, sold some parts, posted it for sale but nobody bit and I was about to take it to CarMax but now I'm back in love and buying more parts getting ready to race again!

Just ordered an x-pipe to modify the stock exhaust as well as SLP loudmouths, which will replace the Magnaflow 16795 I sold.

Ordered an AFE Stage 2 intake to replace the Vararam I sold. I've been an intake whore on this car since I have gone from stock with the panel mod, then OPG CAI, then Vararam, finally to the AFE.

I'm planning to head back to RPM sometime this winter to upgrade some parts in addition to the tune they gave me on the dyno day which perked up my existing mods (intake, ported throttle body/intake manifold, headers, etc..) quite a bit.

Not sure if anyone else has had such a change of heart... I know my indecision drives my wife nuts.

[Tempest2000]

Yup been there done that I have an itch for a c6 z06 and I can't have both right now... so mod the g8 or sell it get a beater and a c6 z06.

My family actually wants me to keep the g8 and wait on the vette another 4 years. The wife and 2 kids love going for a ride in the LOUD car LOL

The problem is if I keep it I can't leave it alone. I want a maggie, but medical bills for our boy shot that down for now and I have the street xa kit ready to go on, but I'm waffling on biting the bullet and doing a diff swap in the meantime. 3.27 or 3.45's.

My wife hates me more everyday and I remind her that she was the one that told me to keep the G8 LMAO

[Devilish34]

Sky next time you want to throw money away throw it my way I need new taller DRs lol
BlackBerry8330/4.5.0.77 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/105

[BigRed585Lbs]

At least you know what didn't work the first time! And there's better stuff coming out every day. So go after it, and maybe some of the rest of us who got out will get back in! (Hope my wife misses this post!)

[SRG963]

haha true...

I found out SuperChips didn't work when I got dyno tuned by RPM.

I found Doug Thorley headers give you nice gains for much less then the competition. They still look nice too with the ceramic coating!

I found that the Vararam collects too much crap in it. The filter was wet every time I pulled it out and full of bugs, cigarette butts, tree parts, etc.. You really need to clean it out every month if you have one!

I found you can easily port your intake manifold and throttle body with a Dremel.

I found I need a converter because this pig leaves too slow.

Wow, that's a blunt statement. I think you meant it doesn't work with LT headers. As many have dyno proven it does work :)

[Tempest2000]

only if you like going slower :)

[GeorgeInNePa]

only if you like going slower :)

This.

The Superchips thing is not for someone who likes to try all the toys and then try other ones. ;)

Show me a Superchips car going 110 or better in the 1/4 and I'll be impressed.

[SpeedRacerX]

This.

The Superchips thing is not for someone who likes to try all the toys and then try other ones. ;)

Show me a Superchips car going 110 or better in the 1/4 and I'll be impressed.

I'm at 108/109 mph right now George in terrible DA. A couple more minor mods and you'll be impressed soon enough. :)

But you are all correct - when I jump to the next level, I will be selling my Superchips and taking my car down to RPM too.

[Devilish34]

I'm at 108/109 mph right now George in terrible DA. A couple more minor mods and you'll be impressed soon enough. :)

But you are all correct - when I jump to the next level, I will be selling my Superchips and taking my car down to RPM too.


Jump froggy jump

[GeorgeInNePa]

I'm at 108/109 mph right now George in terrible DA. A couple more minor mods and you'll be impressed soon enough. :)

But you are all correct - when I jump to the next level, I will be selling my Superchips and taking my car down to RPM too.

I'm getting 110.9x at over 1300' of air. That's holding 3rd, I'm starting to see many cars shifting to fourth and picking up a bit. I think I can get closer to 112 next time.

[SRG963]

I gained 40whp over the SC with only intake and exhaust, I wouldn't call that serious modding.

The shop said the most they had ever seen hand held programmers like SuperChips and Diablo make is like 7whp.

I think the programmers leave a lot on the table for the price...

Are there any SuperChips cars in the 12's?

Exhaust, as in headers correct? Cortex does not support headers, that's where the difference is IMO. and I've proven the Cortex gains with CAI alone (+22.4whp with Roto installed all runs).
http://i297.photobucket.com/albums/mm227/srg963/Dyno%20Pics/P8070063.jpg

and the best time I've found posted in the time slips thread, with Cortex tune alone, no other mods, is 13.367 @ 105.25 MPH 60' @ 2.021

[SRG963]

Haven't found any 12's, but here are some low 13's for ya.

http://www.forum.grrrr8.net/showpost.php?p=148547&postcount=689
http://www.forum.grrrr8.net/showpost.php?p=161011&postcount=743

[SRG963]

I will concur that a Dyno tune is better than everything else, just pointing out the SC tune is better than most would think ;)

[SRG963]

So leaving a free 13whp on the table is ok? I just don't understand, especially since people spend $700-1000 for an exhaust that might gain 10whp and intakes that are $2-400 to gain 10whp. Even a ported intake manifold and throttle body is worth about 10whp and can cost up to $300 but you don't want that same power gain for free?


I'm really not seeing that big of difference in numbers comparing SC with Livernois and VMS for a CAI tune alone. Maybe down 5 whp, that's it.

Besides, dyno numbers really don't mean much. It's how she moves that counts ;)

[AVIDMOTION]

And of course the absolute best reason for a SC tune, the ability to go back to stock for warranty. Yes granted warranty is void for the big modder anyway but to me that ability to go back to stock and the ability to play with it, change variables, change the whole tune, for free is worth the price of admission to me. When I get serious mods that require a real dyno tune, I will sell the SC(again for nearly what I bought it for) and get a tune. But since this is my DD and I promised myself, my wife and the Lord Jesus I would not mod the crap out of this car like all my previuos cars........

[xruling]

I got my SC via the mail in Northern VA. I couldn't get a dyno tune via the mail: Damn it, I can't get a dyno tune in Northern, VA, PERIOD! Everytime I see some performance / speed shop here I just flip them off as I drive by now: POSERS!

[Frans96ss]

I got my SC via the mail in Northern VA. I couldn't get a dyno tune via the mail: Damn it, I can't get a dyno tune in Northern, VA, PERIOD! Everytime I see some performance / speed shop here I just flip them off as I drive by now: POSERS!

Im alittle further north than you but feel free to give me a call if you need it installed.

[Badco]

What's up with the DT's? I guess the cam was justifying something a little bigger?

[STL_G8GT]

Yep! Dude you'll love the 1 7/8 setup...

[Devilish34]

You'll like the fat pig with the 3.45s and then you'll want the shift points fixed

[wreckwriter]

True, have you used manual mode? Seems to be the best way to get it down the track.

You actually race in manual? Wow, with a proper trans tune you should be in the 10s now. Manual shifts horribly slow with every trans tune I've had...

[Andy@Livernois]

Nor would I recommend using a header that is smaller than the port. his DT headers were smaller than the stock port by a small amount, and they are a good bit smaller than our ported head. trust me, a round port on this head will be fine, a d-port ARH headers have actually made a few HP less than the round port Kooks on our builds, hence why we use the Kooks.

One of the things a DT header is not, is a well designed header. The primaries were not consistent in size, and the try-y design is outdated and inefficient in all of our testing for late model cars. if a round port Kooks is the wrong way to go, why does it make 10-15 more HP than a DT? Also, why do even the Kooks mid-length headers make more power than a DT?

[hulkss]

Nor would I recommend using a header that is smaller than the port. his DT headers were smaller than the stock port by a small amount, and they are a good bit smaller than our ported head. trust me, a round port on this head will be fine, a d-port ARH headers have actually made a few HP less than the round port Kooks on our builds, hence why we use the Kooks.

One of the things a DT header is not, is a well designed header. The primaries were not consistent in size, and the try-y design is outdated and inefficient in all of our testing for late model cars. if a round port Kooks is the wrong way to go, why does it make 10-15 more HP than a DT? Also, why do even the Kooks mid-length headers make more power than a DT?

Not everyone gets the same results:

DT Headers Performance (http://www.ls1tech.com/forums/13523737-post4.html)
ARH Performance (http://Forum.grrrr8.net/showthread.php?t=14533&p=210147&viewfull=1#post210147)

[Andy@Livernois]

you can't look at different cars with different mods to form your conclusions. I am talking same cars, back to back. a more scientific test. looking at 10 different cars with different mods and saying one made the same power even though it had a DT header does not make them as good as other headers.

If that were the case then every car we do with a roto-fab, kooks, and corsa should make the same power, and every car should baseline the same... however, they do not.

Until you have invested the time to swap headers on the same car, to test back to back with no other changes, including same oil temp, coolant temp, barometric pressure, humidity, ambient temp, and IAT then you cannot claim what ones are the best.

When you have done hundreds of G8's you get a very good feeling of what parts are the best performing and most consistent out there, and what parts are not up to par with the rest of the field.

[hulkss]

For now I'll use the DT's and save a pile of cash and get within a few HP and maybe even a little more torque on the bottom end as compared to the "best". Good enough for my daily driver. I also prefer the sound isolation of the thicker wall 14 gauge DT tubes VS the thinner 16 gauge tubes on the stainless headers. I really just wanted to point out that the DT flanges do match the stock L92 heads very well.

[hulkss]

I paid less than $1000 for the headers plus Solo Performance mid-pipes (stock axle backs). I like it sorta quiet so I can get on the throttle without attracting unwanted attention. This set-up also fits the stock exhaust manifolds with with OEM or high flow cats.

[Frans96ss]

I wouldnt run it very long with out a tune with that intake. They run lean.

[G8GT594]

race car shit rofl.

[G8GT721]

for sale sign.

[norm8332]

How about the first ans possibly only G8 in the nines!

[vic2186]

MGM-

get a NW102 TB
custom intake
water pump electronic
11.30s for u

[SpeedRacerX]

You're at a futile point. I would de-mod and send those parts over here. LOL.

[vic2186]

Water is 10np
NW will like 5
Bigger diamter intake
Like 4

Almost 20hp

Oh yes 4.10s will VE bad ass

Hmmmmm

[vic2186]

hey you got to chass every little hp..11.30 is great time to run..go for it..better than spending 5-7 k for stroker or procharger

[vic2186]

So you thinking of putting a procharger on that mofo!!!

It would be bad ass with a stroker setup sky..

Maybe you can sell you shortblock and pay diffrence

[vic2186]

what do you mean you dont do burnout??

you at least burn em a little

[Devilish34]

what do you mean you dont do burnout??

you at least burn em a little

MIRs prep is usually really good(esp on rentals). You can't get away without a burnout at Cecil esp with the clowns running the show

[vic2186]

Do the 4.10s..

I'm about to

[vic2186]

whats next!!!!

im telling you try the gears..i feelit will wake this car up more than the 3.45s...

[Tweed1cg]

The 4.10 gears are pretty wicked... Stay NA, all bada**es do!

[vic2186]

u won need 427..gto have 4.10 on stock motor a4..

so do mustangs

[vic2186]

i dont think we will go into 5th..george had 3.70s and wreckwriter they seem to be doing fine

[Devilish34]

i dont think we will go into 5th..george had 3.70s and wreckwriter they seem to be doing fine
Wreck runs a 28" tire

[vic2186]

wow thats pretty close..4.10s on the g8 wont be that bad i see.thanks for the specs george..

also george if you had the change will you had went with 4.10s on your g8

[Devilish34]

The gearing in my Mustang 6A is almost the same as the G8. I am considering 4.10s for the 5.0, the rev limiter is currently at 7350.

6R80......6L80
4.17.......4.03
2.34.......2.36
1.52.......1.53
1.14.......1.15
0.87.......0.85
0.69.......0.67


I haven't surrendered, I simply changed weapons systems.

Check the rear tire height most guys use with that much gear.

[GeorgeInNePa]

wow thats pretty close..4.10s on the g8 wont be that bad i see.thanks for the specs george..

also george if you had the change will you had went with 4.10s on your g8

No, too much weight, not enough tire.


Check the rear tire height most guys use with that much gear.

If I go 4.10s, I'll have 28s on it.

[vic2186]

so how camaro a6 put 4.10s int here a6 like nothing..hey i guess i will be a test dummy..

either 3.73 or 4.10

[vic2186]

4.10s/28s/axles

[wnt2gofst]

George taking it yor going to stay NA on the stang with 4.10s?
I'm thinking of a procharger set up. Least that's the plan for now. Rims and tires scheduled for delivery tomorrow. I'm hoping to get home from Cali in time to make least one night of stock runs before dig into stang. Even though I will just order it all and have it sitting till I get back from Iraq.

Before leave I'm taking tires off racestars to have powder coated. If you want them let me know. They will sit for a year and go to waste.

[GeorgeInNePa]

George taking it yor going to stay NA on the stang with 4.10s?
I'm thinking of a procharger set up. Least that's the plan for now. Rims and tires scheduled for delivery tomorrow. I'm hoping to get home from Cali in time to make least one night of stock runs before dig into stang. Even though I will just order it all and have it sitting till I get back from Iraq.

Before leave I'm taking tires off racestars to have powder coated. If you want them let me know. They will sit for a year and go to waste.

Thinking about maybe staying NA.

PM me about the tires, were they 26s? What do you want for them?

[SpeedRacerX]

Using the Mustang as a comparison; given its gearing, tire diameter, redline, and weight; without that powerband like the Mustang has, a 4.10 might be overkill even with a 28" tire in the G8. Yes/No??

Unless of course you have the GXP with a stick....then you would have more gear/tire options considering only its 6th gear is an overdrive gear - right?

[GeorgeInNePa]

Using the Mustang as a comparison; given its gearing, tire diameter, redline, and weight; without that powerband like the Mustang has, a 4.10 might be overkill even with a 28" tire in the G8. Yes/No??

Unless of course you have the GXP with a stick....then you would have more gear/tire options considering only its 6th gear is an overdrive gear - right?

I think 4.10s are too much for the G8.

My Mustang shifts around 7000 RPM now. If I decide to stay NA, I'm going to have the Livernois piston and rod set installed. Shift points go north of 7500. Comp should have cams out soon...

[Devilish34]

I think 4.10s are too much for the G8.

My Mustang shifts around 7000 RPM now. If I decide to stay NA, I'm going to have the Livernois piston and rod set installed. Shift points go north of 7500. Comp should have cams out soon...

28" tire and 4.10s would be close to 3.90 vs stock tire height and 4.10

[GeorgeInNePa]

28" tire and 4.10s would close to 3.90 vs stock tire height and 4.10

wut