2 registered members (Andy_w83, carmine),
328
guests, and 2
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums69
Topics113,885
Posts1,343,611
Members1,604
|
Most Online731 Jan 14th, 2020
|
|
|
My Engine finally got mapped after 2 years of hell
#608417
09/05/2008 04:30
09/05/2008 04:30
|
TurboJ
Unregistered
|
TurboJ
Unregistered
|
Got my car mapped at PT. And here are my results: http://www.online-presence.co.uk/_coupe/details.php?record=148I found Rob very helpful as usual and was spot on with his comments. I always get nervous when Rob tells me stuff about my car as they are usually insults But on the day I was surprised for him to say that he actually liked it. He was very impressed with the results for my setup and said “what ever you do don’t change a thing”. I took that as a compliment (well kinda as I can’t stop tinkering). A first I was a little bit disappointed with the initial result figures as I was expecting about 20BHP more however, looking at the graph I did actually achieve what I set out to do and that was to build a car with very little lag, and great acceleration from low to mid range as I’m never interested in top speed it’s all about the pull through mid acceleration that I like. After the drive back from PT I was delighted with the power delivery it made. It feels really quick and pulls through the gears very fast with hardly any noticeable lag between changes. I parked it up and waited for a sunny day. After waiting two weeks for a break I finally (Today) got time to take it to a local airstrip to fiddle with it to get a feel for the new re-map. I will at some point write what hell I have been through to even get this far but for now I have kept it short. I now welcome your positive input and/or criticism. What do you guys think?
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608419
09/05/2008 04:33
09/05/2008 04:33
|
h2ypr
Unregistered
|
h2ypr
Unregistered
|
What turbo are you running bud?
Ross
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608421
09/05/2008 04:34
09/05/2008 04:34
|
Joined: Nov 2006
Posts: 788 Midlands
ash_p
Club member 2001
|
Club member 2001
Enjoying the ride
Joined: Nov 2006
Posts: 788
Midlands
|
Very nice result turboj, the torque is very very nice. I bet it feels very fast on the road. I knew you was running good power with your comments to me Would be nice to know how you got that power. Ash
335bhp gt28rsr
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ash_p]
#608424
09/05/2008 04:37
09/05/2008 04:37
|
eldinho
Unregistered
|
eldinho
Unregistered
|
nice curves J interesting to see the max power is so high in the rev range! you are running an RSR aren't you?
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: Freddan72]
#608738
09/05/2008 18:20
09/05/2008 18:20
|
TurboJ
Unregistered
|
TurboJ
Unregistered
|
I had originally planned to run 8.8:1 on my first engine as the forged piston were 8.5:1 so I decked the head and block and didn't really do an accurate cc check as the clown that built my engine didn't have a clue what he was doing. The pistons ended up being too small for the bores and the DTA management was not playing ball. I pulled that engine out and thought if you wanna do something right you've gotta do it yourself. I was going to do the second build in my mates shed but they my other mate (trickymex) said I might as well build it at his as he all the correct tools so it would save me money having to buy extra tools. I also have his experience to hand as he is very clued up. I got all the bits together and we both built the engine up to the spec I wanted. The new pistons I ordered were in 9:1 and after ccing the head properly this time it worked out to be 9.4:1. Tricky was not happy with the CR and I was getting concerned however I was not prepared to wait for a decompression plate to be made as the head and block had already been machined. Since my turbo was not big and my power aims were low and mid I decided to leave it at 9.4:1 and see how it goes. As I could always change the headgasket at a later stage. After the running in I took the car to PT for the first mapping session and I was very disappointed as it was really down on power, Rob said that the exhaust system was too restrictive and he didn't like the high CR. See Below: http://img503.imageshack.us/my.php?image=bravomap1lowresfi9.jpgI then got a new 3" exhaust system and it made a major difference. The housing at the top of the rev range chokes but I was expecting that otherwise I would have got a RS with .86 or a 2871 but I didn’t want any lag or high BHP. The CR is high but makes the torque I want and really holds it through the power band, Rob actually thought that he was mapping at GT2871R, when I told him it was an RSR he nearly fell over I asked what would happen if I dropped the CR back to 8.8:1 and he said I would gain about 15 HP but loose torque as it would shift the graph more rightwards, we then both agreed that this map is perfect for what I wanted as if I really wanted more power all I need to do is change the turbo as my engine can easily deal with the increase however driving round with this power band is awesome and I don’t think I will bother changing anything. Does anyone have any links to other graphs running the RSR?
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608799
09/05/2008 19:21
09/05/2008 19:21
|
Joined: Dec 2005
Posts: 5,405 Castle Combe
Flea
Forum is my life
|
Forum is my life
Joined: Dec 2005
Posts: 5,405
Castle Combe
|
Have look here at Markus's RSR setup http://www.torquestats.com/MarkusYou can see his dyno graph via the link on the page. While your at it add your car too so you can stack up against all the other coops
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608843
09/05/2008 19:55
09/05/2008 19:55
|
h2ypr
Unregistered
|
h2ypr
Unregistered
|
Does anyone have any links to other graphs running the RSR?
I should have one next month, but im not gonna be running anywhere near the same boost as u or markus. Ross
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: Flea]
#608849
09/05/2008 20:04
09/05/2008 20:04
|
TurboJ
Unregistered
|
TurboJ
Unregistered
|
Markus has Cams, Stage 3 headwork and Aquamist over mine. That is a very hard graph to understand. I don't like PTS's graph and there meant not to be accurate what would the PT equivalent be? Do you have any others? I have added my stats to the Hall of Fame. I came in 13th for Torque nearly beating Nigel who has a GT2871R I just want to compare my graph with others to see where their power delivery lies.
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608850
09/05/2008 20:04
09/05/2008 20:04
|
TurboJ
Unregistered
|
TurboJ
Unregistered
|
Does anyone have any links to other graphs running the RSR?
I should have one next month, but im not gonna be running anywhere near the same boost as u or markus. Ross Whats your spec and what sort of power are you expecting?
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608872
09/05/2008 20:26
09/05/2008 20:26
|
h2ypr
Unregistered
|
h2ypr
Unregistered
|
RSR, 3" exhaust, headwork, stnd internals, evo 6 fmic etc etc.
Made 334bhp@1.05 bar on dastek rollers with the gt28r with 308lb/ft at 1.45 bar midrange.
Would be hoping for more torque (10lb/ft extra would be plenty) with more bhp probable although not recommended.
Ross
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#608877
09/05/2008 20:30
09/05/2008 20:30
|
Trickymex
Unregistered
|
Trickymex
Unregistered
|
That plot is not very easy to read is it!!!
yours seems to compare quite well considering markus's has stage 3 head work and cams.
|
|
|
Re: My Engine finally got mapped after 2 years of hell
[Re: ]
#609112
10/05/2008 01:38
10/05/2008 01:38
|
Trickymex
Unregistered
|
Trickymex
Unregistered
|
Have a look at this [img]http://img2.putfile.com/thumb/5/12915211117.jpg[/img]I dont know how to upload excel to a forum so you will have to forgive the picture I hope you dont mind people but i found your plots and inputted the information from them in to excel the blue line is TurboJ, the green line is H2per, the red line is markus and the purple line is flea the information from markus's plot is without NOS as that would just not be fair Jason set out to build a fast road car engine with power in the rev range that would be used, so he aimed for minimal lag and alot of torque this graph shows that Jason has done a great job, his car produces more power than any of the others all the way from 2000RPM up to 4700RPM, how often do you use more than that on a road car?? H2pers does produce about 2-3BHP more than Jason from 2500-3000 and gains a little bit after 5500 but looses out in other places, that would be a good close race I put Fleas in there just to show that the max BHP figure is great but does not tell the whole story, not to take anything away from your car flea, infact yours is very impressive in its own right I think thats a great result,
|
|
|
|