what is the next best thing to do after all of these mods to my cooper

here is my dyno btw (the numbers below are not perfectly correct due to my lack of a detailed sheet)

 

how do i get that TORQUE and HP curve up the ladder ?

but without talking TURBOS or NOS kind of stuff

cheers

 

go for a head.

Matt

 

and a cam, and a header, but i would recomend a few suspension up grades first, like the s boys were saying in the ohter part of the forum.

Beecher

 

Get a Thumper head and a Schrick cam. These two items will give you the best bang that's left short of nitrous.

 

The head will be the next add on !! LOL but I have to say.. tires and traction become a problem when you are making high numbers, at least from dead stops..but from a roll... it is pure pleasure!!

Just me...............................

Thumper

 

run at Moutain Spring... It was running 140+ hp with a bunch of mods, head beeing key... Scott Bibbee was driving, and I think it's his car.

Head, cam, intake, header, exhaust, MTH.

He was faster than me, and I'm putting down over 50 more whp! Yet another objective data driven example that I have lots to learn at the track....

Matt

 

i can hardly believe that with those mods he was getting 140 hp ?
why because i am sure lots of tuners predict high numbers as a marketing strategy. as for certain tuners predicting a cooper of 150 hp without turbocharging, is for me not really correct ?

Look at my dynosheet here above,

my setup before chiptuning;

cold air pipercross viper kit ( there marketing + 10 hp )
Supersprint catback ( there marketing + 5 hp)
obx header (no marketing at all )

before the chip , i was running, look at dyno , +- 119 hp
as for a certain tuner i would have

so + 5 hp with full exhaust system and cold air intake

after chip, and i must say the guys where working on the chip for several hours, finetuning the car and me waiting and sitting there in the wharehouse.... ,

+- 5hp +- 12 NM = total of +- 125 hp (my Total cost per hp +- 120 euros / hp )

as for some tuners i should have +- 140 hp now , wich i find is ridiculous. its +- 15 hp off the predictions ...

i am not whining , i am just being realistic here and am the living proof, and would like a honest prediction of what f.ex HEADWORK and cam would give me extra approx.

some other guy is running the same setup as me but with a FULL SS exhaust system with METALIC race cat , he has a lot more torque the me, but just 2 hp more ...

nevertheless i am happy with my car, after these mods it runs much smoother and is funner to drive around and pulls harder due to the torque increase.

 

miniracer, do you have aftermarket (i.e., lighter) wheels? They certainly make a difference.

Oh, and my #'s match yours pretty closely for a modded Cooper...I got around a 6 hp gain with catback and another 6-7 with an ECU remap.

 

i still have got the 15 " oem mini wheels , i am not sure which type they are , but they are original equipment .... and are lighter then the oem 17 s spokes

i am planning on upgrading to 17 "aftermarket wheels, but am confused because this will make my ride slower .

and are u sure u got 6 hp with the catback, ??? i doubt that ... have u got some dyno sheets laying around ?

cheers

 

It is our car... We're not "tuners" in that we offer NO performance mods via our shop, other than cat-backs (which don't provide much more than better sound and lighter weight). We're suspension and brake specialists. I have nothing to gain, business-wise, from claiming 140+ whp our of our Cooper.

My baseline dyno, with BMP intake and Borla catback was 110 whp and 112 ft/lbs. With the head and cam and MTH tuner file (also added Milltek header at the same time, I'd say negligible gains from that), we were right around 140 whp and 135 ft/lbs. There's a LOT of hp to be had from good head work. I'll be dyno'ing again in a couple weeks at the next dyno day. For fun.

I can tell you that the car is way, WAY more fun to drive than it ever was before. It also grenaded the original Midlands gearbox. Hah!

A good head should net you at least 20 whp (no, the JCW head does NOT qualify as a "good" head)... A great head should get you closer to 25-30 whp.

 

yes i am afraid of my gearbox too,it will surely have a hard time if i decide to go the full monty on this ....

thx for your imput,

 

Some day, post gutting and caging and full transformation to "track tramp", we'll toy with individual throttle bodies just for the heck of it.

 

go to as many HPDE's as you can.

http://www.trackschedule.com/

 

sure if i could have the time for it , but in meanwhile the streets are my playground ..

 

does a throttle body do much to the coopers performance ... ?

 

Understandable, but the HPDEs will REALLY instruct you in ways you can never know, unless you take some. They are THE best "mod" you can do....

 

The ITB's should add very snappy throttle response - and, if tuned properly, more power.

 

larger tbs haven't really shown any benefit on "bolt on" cars. I didn't test the Cooper in detail, but I did an S. 58-62mm made NO DIFFERENCE at all, but that was prior to my head upgrade. On the S the larger air flow at low throttle doesn't do nice things to the ECU... Maybe with the easier intake on the Cooper this won't happen. Let us all know what you find! I'm curious....

Matt

 

We're talking individual throttle bodies... One for each cylinder! I've seen them on a couple of Coopers now... I believe that HPA did at least one of them...

http://haywardperformance.com/intake.htm#mini

Tuning will be a major PITA and require a different ECU, IIRC. It'll be major surgery for sure and a tough implementation - but it'd be coolio!

 

I really like my Kosei K-1 16"s...they are light and still preserve the ride. I did weigh them when I got them, but don't recall the actual number. They weigh about the same as the skinny 15's that came stock, but dramatically improve the handling with 205/50's.

If you check out the GIAC for the Cooper thread on this forum you can see my dyno results. It is pre-post ECU map, but you can see the pre #'s (which are post- Magnaflow Catback) are 5-6 HP greater than a stock Cooper (which I'm told is around 111 WHP on a Mustang Dyno).

 

this is what he is talking about .... looks very sweet...

cost 2000 usd (i assume without install)