07 Pontiac Grand Prix - Simple DD.

[Nokooler]

I bought this car as a daily about 1 month ago. Bone stock with it went 14.8@92mph. According to HP tuners, she was at 11* of timing down the track.

So far I have an open cone, and the boost bypass mod, awaiting track results on 4/26 , with some more time behind the wheel.
Future plans include, built trans(maybe a converter), manifold porting, ubend delete.
I'll get a tune, probably sooner than the exhaust mods.

My overall goal is 14.0@98+

Here soon I'll attempt my first go at a sound system.

 

[DeFormula]

Looks like a nice ride. Have fun!

 

[smooth]

I would recommend a nice big trans cooler, I went through 3 transmissions in my 07 gxp

 

[Nokooler]

Went to the track, lost to a 4.6 stang. I figured out how to launch after the fact, but only got a 15.0@91mph. I'll upload the videos tonight.

 

[Nokooler]

 

[Nokooler]

Got some runs in at test and tune yesterday. I've been fighting a voltage issue, it was mostly the + terminal. I put on a new supercharger belt as well, mine was breaking up. Finally got the car figured out as far as IAT temps, and I had KR all night, I went from 8* timing to 10*.
14.66@92mph was my best. 2.1 60ft, I did get a 2.0 60ft, but the car was hot and it went downhill after the 330. Almost beat another 4.6L stang...

This Monday is Plugs/wires and fuel filter, then I'll do a street test with hp tuners and see where it's at.
Vid's will be up later today

 

[Nokooler]

 

[Nokooler]

 

[Nokooler]

 

[Nokooler]

Sparkplugs, wires, 180drilled thermostat, exhaust crossover wrap is done. Car runs a ton better.

 

[Nokooler]

I will probably be heading to ubly tomorrow. MMM has another TnT at the end of this month.

 

[Nokooler]

Well I went to Ubly, prep wasn't great for street tires, and I couldnt drive around the waterbox. Car was still pulling timing due to the heat, I only made three passes. 14.8@90mph.

I'll be doing rotors/pads next weekend, hopefully in July I can get a header/downpipe and tune.

 

[Nokooler]

My brother and I did some tuning today.
Mods - Offroad downpipe.

 

[TWOBEERS]

I miss my 99 GTP . Went 14.0 with a canned tune, 3.25 pulley, cat delete, and a bunch of little stuff on street tires. Was hard to get it to hook. When it does, you will have trans problems.

Sent from my Nexus 5 using Tapatalk

 

[Tin]

I miss my 99 GTP . Went 14.0 with a canned tune, 3.25 pulley, cat delete, and a bunch of little stuff on street tires. Was hard to get it to hook. When it does, you will have trans problems.

Sent from my Nexus 5 using Tapatalk

'99 didn't have the heavy duty 4T65, they were held together with paper clips :lol:

 

[Beigg]

'99 didn't have the heavy duty 4T65, they were held together with paper clips :lol:

Thought that was 97 only (non HD 65E)

 

[TWOBEERS]

Thought that was 97 only (non HD 65E)

Yea, my 99 had the HD trans. Better than the non HD. but still not a great trans.

Sent from my Nexus 5 using Tapatalk

 

[Tin]

Thought that was 97 only (non HD 65E)

Nope, it's '00 and up.

 

[Tin]

Yea, my 99 had the HD trans. Better than the non HD. but still not a great trans.

Sent from my Nexus 5 using Tapatalk

Costs a good amount to make them stay together too.

 

[Beigg]

Nope, it's '00 and up.

I'll have to look at the current trans on hand to check it, but I recall the 4T65E-HD in position is from a 1998 car. It does in fact have a removable diff housing...