Decided since the weather was nice yesterday (low 60s) that I'd hit Test & Tune at Capital Raceway; car is a 2008 6MT with 42k miles, bought the car back in Jan 2018. Only mods are a 3.5" GT2 gmg racing catless but muffled exhaust, CEL is on due to catalytic converter inefficiency 🤣.

Anyways, avoided the water box on everypass, kept tire pressure at stock on my stock sized mpss tires & about a hair less then half tank on 93 octane. PSM off and sport on.

1st pass:
11.7@122mph
1.8 60ft

2nd pass (hot lapped, big nono - got the clutch hot which caused slippage)
13.0@120mph
2.4 60ft 😏

3rd pass, let the car cool down for 35 mins.
12.0@121mph, bogged at launch 🤪
2.0 60ft

4th pass, cool down for 20 mins.
11.6@122mph
1.80 60ft

5th & final pass.
11.54@123mph
1.624 60ft.

I found that this car leaves its best launching at 3000 rpm with a clutch slip. Had a great time, I haven't visited the track as a driver since 2014 (being an adult & parent has it's constraints).

Val

 

Car is running very well for exhaust only. Now time for a flash, intercoolers, and a Sachs 2.5 when the factory clutch gives up the ghost

 

Thanks sir, I think I'm going to get the Sachs 2.5 and put it on the shelf as a preemptive measure. But next mod will be Cobb with custom tunes & try to get the et's into the 11.0 or lower range 🙂

 

The factory clutch has a really weak pressure plate, relatively speaking. Once you flash the car, the clutch will be short lived...it just isn't up to the task of handling too much more than factory power. While you're installing the clutch, pony up for all the other "while you're in there" stuff as well.

 

Amen brother found this out the same way - the stock clutch sucks

 

great MPH and 60 foot for stock. I trapped 117 (but in Florida)

 

Nice job! You could use a mini-cat bung extension to get rid of the cel. It works.

 

On all 4 o2s? I was just going to opt to bypass them via Cobb.

 

no, just for the last two that would be typically behind the cats.

 

If you’re planning on flashing soon I wouldn’t worry with 02 devices. They’ll just turn motorsports flags on in the ECU and you’ll be rid of the codes. If you want to pass OBD emissions then you’ll need the hardware referenced and the motorsports flags left off since that disables the rear 02 routines.

 

you can bypass them if your state emission doesnt require OBD readiness, because all it does is just shut the light off.

 

Good job! Please keep us posted with your updates.

 

Will do, next round will be Cobb ap with custom tunes, then clutch & inlet pipes. Then with the advice of prodigymb, I'll pick an intercooler. But everything will be done in stages.

 

intercoolers in time for summer is definitely a good move!

 

Need to spend sometime and read the pm you sent me about which inlet pipes to go with. What ic's do you recomend?

I saw that ams are made in china, do88 dont run end to end....