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      03-24-2015, 12:07 PM   #1
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Santa pod 21-03-15

Hi Guys,
I went to Santa Pod again on Sat 21st March for one of their longer sessions. 9am til 8pm. Luckily this time the weather was not wet and I got 6 runs. There were around 300 cars there as my brother saw a car marked 296! Some came in the afternoon for the cheaper session. Didn't seem much point in that to me as the queues were so long you'd probably get one run! I think I was taking about 2 hrs to get around at times. I got there at about 9:20 and lined up as soon as I had signed on. I didn't leave until it closed.

It felt like the bikes and mini dragsters were just going around and going straight to the front of the queue. Yes they didn't go straight round and round but some of us in cars were waiting 2 hrs queuing further back than the finish line of the actual strip!

I struggled again alot with getting traction from the start line. My best run was actually my first of the day and so was my brothers. Probably the surface was still warm from the gas burners they use to heat it.

I played with the launch control but learned that if you aren't full throttle, i.e. pushing the kick down button then it doesn't dump the clutch. You end up just revving high and rolling very gradually. By the time I noticed I lifted off, fed back in the power and then got massive wheel spin.

My times sucked but I did break 110mph.



To do so I ran 5L of ethanol in a full tank of tesco momentum fuel. (That works out as E12.8) I had limited boost in 1st and 2nd gears to 7psi and 10psi to try and help get traction. Most times boost only got to around 12.5psi. I think I'm in need of a flash. High and low pressure fuel pump readings looked good but I think the traction control pulling timing was killing my boost in map 5. In it's current state my car feels like it runs better on regular premium unleaded.

With the 2hr go around times I lost a bit of focus on how to do a quick start. I should have just feathered 1st. On the 4th run against the GTS I did a 2nd gear start. No wheel spin but the car pulls away incredibly sedately.

My first run was against a 650HP supercharged American car. A Camaro I think? His trap speeds were around 120mph.



My second run was against a Saxo. As you can see my car is really struggling for grip at the start.





My third run was against an Astra GSI? It pulled ahead and stayed ahead a lot longer than I would have expected. Some mods I expect.





My 4th run was against a GTS. It looks like maybe the guy mis-shifts. This was my 2nd gear start. You can't see just how slow it is pulling away. My foot was flat to the floor from the green light. The battery ran out on the front facing camera. Side view only.



My fifth run was against an MX-5. I was close 2 times to racing E92 M3s but it never happened. They were running around 14 seconds from the times I saw.

This is where I activated launch control, had the flag on the dash but didn't hold the pedal to the floor so the clutch didn't engage. It took about 1.5 secs to react to that. So he gets a good jump on me. I had a 110.72mph trap speed.



Now my 6th run is a real mystery to me. I have a DCT box but for some reason my car went nuts. I did launch control but again, foot wasn't to the floor so it literally rolls forwards. You may be able to see that my first gear change, after pulling away appears to misshift! WTF? I thought this was impossible in a DCT. I thought I may have screwed my car but it changed gears fine after that and hasn't shown any ill effects? I assumed my car had jumped out of map 5 into map 4 but when checking the dash it hadn't. I'm perplexed. Anyway I just cruised to the finish line wonder what was going on. Just my luck it was my last run of the day! How annoying. I'd put on the crash helmet because of the 110 trap speeds.



I realise now I got so obsessed with trying launch control that I didn't just do 1st gear starts feathering the throttle. Live and learn!


***Edit - This DCT bouncing off the redline has been reported by some M3 owners.

Last edited by AWSAWS; 03-24-2015 at 01:35 PM.
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      03-24-2015, 12:33 PM   #2
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What car is yours and what's you bhp/torque?
I'm sure that's the camaro that's from tamworth area, if it is he also got a couple American cars
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      03-24-2015, 12:43 PM   #3
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That car does not want to launch!
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      03-24-2015, 01:10 PM   #4
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This guy with the camaro was living in North London. I spoke to him for a while. He was a nice guy. He'd supercharged it and was going to be running more and more boost after swapping to forged engine parts. He was quite impressed by the logging on the JB4.

My car is probably somewhere around 380bhp. JB4 and down pipes.

Its a 335i MSport with DCT. It dyno'd at 424BHP but the place I did it was a real cowboy outfit. My traction control wasn't fully turned off. I thought the guy would know.

I didn't want to launch from the 5000 rpm at which launch control works from. The trick is to hit the kickdown switch and release the brake before revs rise to high but I messed it up.
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      03-24-2015, 01:11 PM   #5
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What kind of trap times will a 335i run with meth injection?
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      03-24-2015, 04:03 PM   #6
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The first run is a dodge challenger with a KB supercharger, he was at Pod when I went for my 21st birthday in my 325i! Traction off the line seems to be an issue as your 60ft times are well off, I was getting 2.1/2.2 60fts in my 325i on RFTs, but then you do have a LOT more power to put down, trap speeds seem spot on though, Pod really is addictive isn't it?

Also rule of thumb is whatever the difference in your 60ft time, it doubles by the end of the strip, for example you did 13.6 with a 2.5 60ft, and 14.0 with a 2.7, meaning that if you got down to a 2.2 60ft you'd run 13 flat which is very very quick!
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      03-24-2015, 05:32 PM   #7
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Quote:
Originally Posted by Shafz325 View Post
The first run is a dodge challenger with a KB supercharger, he was at Pod when I went for my 21st birthday in my 325i! Traction off the line seems to be an issue as your 60ft times are well off, I was getting 2.1/2.2 60fts in my 325i on RFTs, but then you do have a LOT more power to put down, trap speeds seem spot on though, Pod really is addictive isn't it?

Also rule of thumb is whatever the difference in your 60ft time, it doubles by the end of the strip, for example you did 13.6 with a 2.5 60ft, and 14.0 with a 2.7, meaning that if you got down to a 2.2 60ft you'd run 13 flat which is very very quick!
Interesting calculations! Thanks.

I was just coming on here to note it was a Challenger but you beat me to it.

I'm hoping to get something in the 12's eventually. Yes it's very addictive. If my brother wasn't having work done on his car at the weekend I'd be going again. It's 100 miles away from me though. Quite a trek. Getting there for 9am really takes it out of you. The weekend is meant for relaxing, lol.

This is the one. My brother raced the E55 and got hammered! It's on slick tyres. The guy told my brother the Merc was 2 seconds quicker as a result!

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      03-24-2015, 06:57 PM   #8
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Good terminal speeds. It's your starts that are killing you.

Your 60FT times are poor and getting beat off the line by a FWD car shows that.

Once you work out what's going wrong there, you'll have a whole heap of time to slice off.
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      03-24-2015, 11:14 PM   #9
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Quote:
Originally Posted by Kerr View Post
Good terminal speeds. It's your starts that are killing you.

Your 60FT times are poor and getting beat off the line by a FWD car shows that.

Once you work out what's going wrong there, you'll have a whole heap of time to slice off.
Totally agree mate, thanks
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      03-25-2015, 02:33 PM   #10
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When I had my 335i it used to get around 107 MPH & around 13.2 time this was manual but I can't remember whether that was when it was remapped or not.

The M3 was similar if it was faster it wasn't much.

But TBH if you get a bad day i.e. too hot, cold, windy or where the traction is off the times can seem disappointing.
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      03-26-2015, 03:19 AM   #11
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How many 3rd gear pulls did you do in map 5 once you changed the fuel blend?

WM
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      03-26-2015, 06:52 AM   #12
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Quote:
Originally Posted by windymissile View Post
How many 3rd gear pulls did you do in map 5 once you changed the fuel blend?

WM
More than I can count WM

Ran my tank down to near empty. Pulled into car park near the tesco garage. Added the 5L of ethanol. Nipped the 10 yards over to the forecourt and filled up.

Filled the tank in Derbyshire and ran the car for a good few miles in map 2 to make sure I was on to the new mix. Nothing left in the fuel lines. Did a 1/7 reset. Let the car reset with the 30 secs off, 30 secs on throttle method. Car started well without surging like mine often does with a straight 1/7 reset. Swapped to map 5 and started logging. Should have them somewhere. I'm sure boost was hitting 15psi. What might happen is DTC pulls timing and looks like knock to the JB4. Avg_Ign climbs and climbs. Boost drops and drops. My Avg_Ign was getting up to 6.8!!!!!!

Staight momentum running at around 3. On one of my runs at 110mph trap speed my boost only peaked at 12.2psi! My car has a lot more to give.

Biggest thing for me now is practicing the launches in first gear without launch control, getting the clutch to come in quickly and then feathering the power.

I tested in Derby, 100 miles from the track in case I got misfires and needed to dilute the Ethanol. I'm still learning.
Attached Files
File Type: zip Ethanol run2.zip (3.3 KB, 4 views)
File Type: zip straightGas_150325_2032.zip (6.9 KB, 3 views)

Last edited by AWSAWS; 03-26-2015 at 07:09 AM.
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      03-28-2015, 06:39 PM   #13
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Well I was so peeved about my crappy starts on the last Santa Pod trip that I just had to go back.

Finally started to nail it. Didn't bother with the launch control. Broke into the 12's and that was with a headwind so strong I could just about lean into it and not fall over. You'll see from the vid that the flags are pointed directly up the track. So I think there's a better time in the car still.

There were some showers and the track crew had to dry off the track twice. The rubberized surface is impermeable to water so it has to be mopped up, blown off, whatever they do. Temps are still fairly low as well. Probably good for the turbos but not great for track temps and tyres.

It was fun. I feel like I achieved my goal for now.

My best run was against this E39 M5. The M5 looks properly outclassed in this one.



Here's the times:



Looks like someone scr*wed their car down there recently! Drive safely everyone.

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      03-29-2015, 02:30 PM   #14
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Decent launch there. Sub 13 is a good time. I expect in the summer you should be able to go 12.5
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      03-29-2015, 08:14 PM   #15
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Quote:
Originally Posted by djgandy View Post
Decent launch there. Sub 13 is a good time. I expect in the summer you should be able to go 12.5
Hopefully. Even without the headwind I think there's a chance.

Check out this race. It was very close. That car's running alot of boost. Luckily for me he ran out of revs and road.

I normally get to 5th gear on these runs. I have 2 more to go. Guessing that car has 5.

A Nissan Silvia I think?



4th run of the day 13.1166 sec @ 111.96mph
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      03-30-2015, 04:50 AM   #16
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Quote:
Originally Posted by AWSAWS View Post
Hopefully. Even without the headwind I think there's a chance.

Check out this race. It was very close. That car's running alot of boost. Luckily for me he ran out of revs and road.

I normally get to 5th gear on these runs. I have 2 more to go. Guessing that car has 5.

A Nissan Silvia I think?



4th run of the day 13.1166 sec @ 111.96mph
Wow you get the 5th. That's the DCT benefit I guess, 3rd gets me to about 110mph and, 4th gets me to around 140mph lol. Saying that, with a relatively flat power band at the top it might not make such a difference once you hit the higher speeds.

You can see how peaky that guys boost is.
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      03-30-2015, 08:50 AM   #17
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Quote:
Originally Posted by djgandy View Post
Wow you get the 5th. That's the DCT benefit I guess, 3rd gets me to about 110mph and, 4th gets me to around 140mph lol. Saying that, with a relatively flat power band at the top it might not make such a difference once you hit the higher speeds.

You can see how peaky that guys boost is.
5th gear is literally right at the finish line for about 200 rpms. Around 5300 to 5500 after changing at 6200 in 4th.
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      03-30-2015, 09:23 AM   #18
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Quote:
Originally Posted by djgandy View Post
Wow you get the 5th. That's the DCT benefit I guess, 3rd gets me to about 110mph and, 4th gets me to around 140mph lol. Saying that, with a relatively flat power band at the top it might not make such a difference once you hit the higher speeds.

You can see how peaky that guys boost is.
Considering if that's a 200SX, stock times are around 16 seconds so he's improved the car by a fair amount!
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      04-05-2015, 04:02 PM   #19
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Quote:
Originally Posted by AWSAWS View Post
What kind of trap times will a 335i run with meth injection?
Mid 12's..
Probably quicker if the driver had any skill...
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      04-06-2015, 04:01 PM   #20
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Quote:
Originally Posted by windymissile View Post
Mid 12's..
Probably quicker if the driver had any skill...
WM
Oi!

There's a 335i on N54tech which looks to be running DPs, FMIC, JB4 and E85 (walbro inline pump) getting 11.8, 116mph. Wedge flash.
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      04-06-2015, 04:28 PM   #21
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Quote:
Originally Posted by AWSAWS View Post
Oi!

There's a 335i on N54tech which looks to be running DPs, FMIC, JB4 and E85 (walbro inline pump) getting 11.8, 116mph. Wedge flash.
I was on about me!

He will be running drag radials. I was chatting with some of the 'pro's' there yesterday and some proper sticky tyres can make a big difference!
I had plenty of boost to go. I wasn't pushing things too much as I was sideways in 1st, 2nd and into 3rd. Next time I'm there I will have been running some E% so I hope this will gain me some 10ths..
It's pretty addictive. Not something I am really interested in but it's a good measure of a cars performance.

They do club group days.. Something I would like to do.

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      04-07-2015, 06:33 AM   #22
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What times did you get WM?

I think the club day would be a great idea! Was that at York Raceway?
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