was down at DSR hanging out, when i decided to compare my friends gsr dyno graph vs. hype-r-29's dyno. they both have almost the same mods, but one's a 00 GSR and the other is a 00/01 ITR.

ITR mods..
AEM Cai, JDM 4-1, SMSP testpipe, Apex N1 exhaust, RC 310 injectors, Hondata S200, Skunk2 stage 1 cams and cam gears.

GSR mods..
AEM Cai, JDM 4-1, JDM R cat and exhaust, RC 440 injectors, Hondata S200, Skunk2 single runner manifold, stock throttle body bored to 64mm (to match manifold), Hondata manifold gasket, Skunk2 stage 1 cams and cam gears, Portflow inner springs, ITR outers and titanium retainers.

keep in mind, both cars have stock compression, the GSR at 10:1 and the ITR is 10.6:1 and the GSR is running a stock R cat and exhaust. both cars have 45-50k.

heres the dyno..


so.. almost identical numbers.. expcet for the 5500-6000rpm range.. do you think the test pipe and free flowing exhaust makes the difference, or because of the higher compression?

my friend would really like some more midrange power, without losing the sleeper exhaust and header (JDM heatshield fools cops all the time ) how can we get that sucker some more power?


Modified by Downey at 2:13 AM 2/18/2004

 

nice

 

I assume the red line is the GSR. I think some tuning will fix that dip.

 

10.0 rocks the house

did the GSR have any headwork done? Was the R tuned?

 

the itr is the red line look at the vtec poin and red line

 

The way the steep port is designed in the gsr head, it will have a little more mid range flow. The b16/type-r head casting will have more top-end flow resulting in the dyno provided.

 

cali gas eh...

for your friend with the itr...i would suggest
-JDM ITR pistons (gives him approx. 11.0:1 compression)
-port/polish the head (more flow=more hp)
-portflow inner springs (dependability in higher rpms/less chance for valve float)
-more tuning

 

Damn closer than I thought. Maybe w/ the exhaust it would help out the midrange.

 

would a mild pnp on that ITR head pull out 20 hp?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flesh199 &raquo;</TD></TR><TR><TD CLASS="quote">the itr is the red line look at the vtec poin and red line </TD></TR></TABLE>

Not neccessaily true that the red line is the ITR. Both car has hondata, so how can you tell. If they are set at stock vtec points, then GSR doesn't not kick in at 5200 rpm.


Modified by Jun at 7:43 PM 2/18/2004

 

dosen't a type R put down 170whp stock? I think something is wrong w/ the R

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jun &raquo;</TD></TR><TR><TD CLASS="quote">

No neccessaily true that the red line is the ITR. Both car has hondata, so how can you tell. If they are set at stock vtec points, then GSR doesn't not kick in at 5200 rpm. </TD></TR></TABLE>

i only say that because the blue line have a better midrange .So that why i first think that the red line is the itr...But like you said, both car has hondata,same cams/camgear so it's difficult to say witch car have the red line...

 

SUP DOWNEY!!! thanks for the side by side comparision....The BLUE line is mine..its a 2000 Type R....its tuned with a hondata s200...heres a link to my actual graph...i pulled 179whp/130 torque .....

https://honda-tech.com/zerothread?id=750647

 

I'm right after all.

 

The Type R hp figures seem pretty low... Ive seen Stock R's dyno close to that.

 

skunk2 stage 1 are similar to itr cams.. arent they? that's what i thought

 

looks to me like both cars need some better tuning......

the red line has vtec coming in too late

 

if those two cars were tuned at dsr then I'm 100% sure they are tuned to their best.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BolivianDc2 &raquo;</TD></TR><TR><TD CLASS="quote">dosen't a type R put down 170whp stock? I think something is wrong w/ the R</TD></TR></TABLE>

Don't stock R's put down ~160wHP?


oh, and I'm surprised Lawrence couldn't fix that Vtec dip (Red Line).

 

my R bone stock put down 158whp and by advacing the timing to 18deg it went up to 164whp....... so a stock R is in the 160 range

 

damn..gonna have to show my friend this thread later!!!! I guess i have a few things i need to put on my "to buy list" after seeing those gsr numbers!!

 

the R should be putt'n down more power. I put down the same power on stage 1's in a completely stock pr3 B16 block.

 

Peak #'s don't mean ****. DIfferent dynos, different locations, different days. You can't say a stock motor will put out x amount of hp. It will be different no matter what. Looks like that GSR gave a lot away in the midrange for that top end hp. Probably due to the manifold. ITR's compression is more than likely helping it out there. The itr's CR is much better paired for the skunk2's.

Downy-Were those cars tuned by lawerence or are those just baseline runs?

 

both cars were tuned by Lawrence at DSR. the gsr is lacking a little bit of mid range, and that is what the owner wants more of.

we will probably swap the us p72's out for some jdm p73's when the motor get a few more miles on it. the power it has now is still really fun.

 

Nothing really thats strange about that. Change out the parts that differentiates it from the gsr and you will see that the difference becomes really small between the two.