My first tune / B20 non vtec all motor
Moderator: Gaskleppie
-
- Posts: 19
- http://phpbb3styles.net
- Joined: Tue Oct 02, 2007 10:38 pm
- Location: Chile
My first tune / B20 non vtec all motor
Hi all This is my first tune on dyno with Ectune software, my car has a B20 all motor non vtec, 33 mm intake valves, 12:1 compression Crower cams 405A-2, Type-R Exhaust, Custom Intake, 68 mm throttle etc, p29 ecu... We have made the same setup time ago on a 1.8 B18b P75 head with 31 mm intake valves and free exhaust to the door on 2``, the rest the same setup, it made 199 whp tuned on Crome P75 ecu. The thing is that the B20 dynoed max 204.9 whp on eCtune, very low whp I spected at least 220 whp, at first it made 199 whp and a smooth curve, but when we moved the cams the curves turned on irregular lines... and only 5 whp more... tried every thing, + - timming, + - cams, and the power was always between 199-205 whp... what could be wrong? since I change the cams position the curves become irregular and there is no more power...
- Attachments
-
- 199.JPG (46.58 KiB) Viewed 17028 times
what kind of header/exhaust setup are you using? when it comes to n/a setup's once you reach up to a certain power level (190-200whp) the key to gaining that extra 10-15hp is in a good custom header and exhaust and fine ecu tuning. also the intake manifold design can play a big factor as well. good power for a non-vtec setup....i like it....
The header is from a JDM Type R engine, I use a N1 Buddy club exhaust on the curves from a EG6 on 2.25``, the rest is on 2,5``, next time I think I will use a free exhaust to the door to see the differences and make a 100% fine ecu tunning. The Intake manifold is custom design with 68 mm tb, will post pictures later. Thanksnon-vtec wrote:what kind of header/exhaust setup are you using? when it comes to n/a setup's once you reach up to a certain power level (190-200whp) the key to gaining that extra 10-15hp is in a good custom header and exhaust and fine ecu tuning. also the intake manifold design can play a big factor as well. good power for a non-vtec setup....i like it....
jdm r header collector is actually less than 2.5\" diameter and they don't flow as well as everyone thinks over a certain power level. it was designed for a 1.8L engine and you a running it on a 2.0L engine. you need a long tube custom header (smsp, hytech, rage etc..) with at least a 2.5\" collector and complete 2.5\" exhaust with a test pipe. i have seen dyno's of guys switching from 2.5 to 3\" exhaust on a n/a setup and gaining a good ammount of power...i would go for the minimum of 2.5\" all the way.
why not? Look our 1,8 B18b, 211 whp bad tuned on crome, if well tuned and a dynojet correction it could pass 220 whp on 1.8 non vtec... http://www.youtube.com/watch?v=vEutvZXAQQc9400RPMS wrote:This is a non-vtec all motor.. and u were expecting 220+Whp? The numbers you have are impressive enough.. holy smokes.. I dont think i've seen a non-vtec all motor car make these numbers.
-
- Posts: 350
- Joined: Wed Dec 03, 2008 11:11 pm
- Location: united states, aurora, ill
Not really Vtec heads, valves, ports and everything flow differently from a "non" vtec head.thething96 wrote:It shouldn't matter if the engine is vtec or not to hit that 220whp mark. The main difference between is vtec=low cam lobe and high cam lobe, non-vtec= high cam lobe only. If both setups flow similar, have similar mods,cam lift and duration is similar,both should make the same power, right?
DDTech | DDTECHCAMS.COM